CVE-2022-49846

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-05-01. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

udf: Fix a slab-out-of-bounds write bug in udf_find_entry()

Syzbot reported a slab-out-of-bounds Write bug:

loop0: detected capacity change from 0 to 2048 ================================================================== BUG: KASAN: slab-out-of-bounds in udf_find_entry+0x8a5/0x14f0 fs/udf/namei.c:253 Write of size 105 at addr ffff8880123ff896 by task syz-executor323/3610

CPU: 0 PID: 3610 Comm: syz-executor323 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report+0xcd/0x100 mm/kasan/report.c:495 kasan_check_range+0x2a7/0x2e0 mm/kasan/generic.c:189 memcpy+0x3c/0x60 mm/kasan/shadow.c:66 udf_find_entry+0x8a5/0x14f0 fs/udf/namei.c:253 udf_lookup+0xef/0x340 fs/udf/namei.c:309 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10e6/0x2df0 fs/namei.c:3710 do_filp_open+0x264/0x4f0 fs/namei.c:3740 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1396 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ffab0d164d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe1a7e6bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffab0d164d9 RDX: 00007ffab0d164d9 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007ffab0cd5a10 R08: 0000000000000000 R09: 0000000000000000 R10: 00005555573552c0 R11: 0000000000000246 R12: 00007ffab0cd5aa0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 3610: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380 kmalloc include/linux/slab.h:576 [inline] udf_find_entry+0x7b6/0x14f0 fs/udf/namei.c:243 udf_lookup+0xef/0x340 fs/udf/namei.c:309 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10e6/0x2df0 fs/namei.c:3710 do_filp_open+0x264/0x4f0 fs/namei.c:3740 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_creat fs/open.c:1402 [inline] __se_sys_creat fs/open.c:1396 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1396 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff8880123ff800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 150 bytes inside of 256-byte region [ffff8880123ff800, ffff8880123ff900)

The buggy address belongs to the physical page: page:ffffea000048ff80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x123fe head:ffffea000048ff80 order:1 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea00004b8500 dead000000000003 ffff888012041b40 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x0(), pid 1, tgid 1 (swapper/0), ts 1841222404, free_ts 0 create_dummy_stack mm/page_owner.c: ---truncated---

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
14th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 1, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
Patch available.
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c8af247de385ce49afabc3bf1cf4fd455c94bfe8
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ac79001b8e603226fab17240a79cb9ef679d3cd9
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c736ed8541605e3a25075bb1cbf8f38cb3083238
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/03f9582a6a2ebd25a440896475c968428c4b63e7
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d8971f410739a864c537e0ac29344a7b6c450232
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7a6051d734f1ed0031e2216f9a538621235c11a4
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f1517721c408631f09d54c743aa70cb07fd3eebd
Web page

udf: Fix a slab-out-of-bounds write bug in udf_find_entry() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/583fdd98d94acba1e7225e5cc29063aef0741030

Vendor Advisories for CVE-2022-49846(19)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(14)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatkpatch-patch2025-07-14redhat
redhatkernel-0:4.18.0-477.101.1.el8_82025-07-14redhat
redhatkernel-0:5.14.0-70.138.1.el9_02025-07-14redhat
redhatkernel-rt-0:5.14.0-70.138.1.rt21.210.el9_02025-07-14redhat
redhatkernel-0:4.18.0-305.162.1.el8_42025-07-14redhat
redhatkernel-0:4.18.0-193.159.1.el8_22025-07-10redhat
redhatkernel-0:4.18.0-372.151.1.el8_62025-07-09redhat
redhatkernel-rt-0:4.18.0-553.60.1.rt7.401.el8_102025-07-09redhat
redhatkernel-0:5.14.0-284.124.1.el9_22025-07-09redhat
redhatkernel-0:4.18.0-553.60.1.el8_102025-07-09redhat
redhatkernel-0:5.14.0-427.76.1.el9_42025-07-09redhat
redhatkernel-rt-0:5.14.0-284.124.1.rt14.409.el9_22025-07-09redhat
redhatkernel-0:5.14.0-570.25.1.el9_62025-07-07redhat
linuxKernel @ 4.9.334 (fixes >=4.6.0)—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (22 versions)
  • every version up to 5.10.158-1: fixed in 5.10.158-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.0.10-1: fixed in 6.0.10-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.0.10-1: fixed in 6.0.10-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.0.10-1: fixed in 6.0.10-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 25× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 90 of 169 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 10 repeat rows among the latest 100 are merged into the row they repeat. The 79 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-10-13 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-12 18:41 UTCEG score recompute
  4. 2026-10-12 16:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-10-11 22:05 UTCEG score recompute
  6. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  7. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  9. 2026-10-08 17:05 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-07 23:45 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-06 15:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-05 17:40 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-04 23:19 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-09-30 16:12 UTCEG score recompute
  16. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-09-26 18:33 UTCOSV refresh
  19. 2026-09-26 15:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  20. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-09-24 14:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  22. 2026-09-23 13:45 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-09-20 20:13 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-09-16 14:05 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 65 more
  1. 2026-09-15 03:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-09-13 16:44 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-09-11 14:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  4. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  6. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  7. 2026-09-07 04:18 UTCOSV refresh
  8. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-09-05 15:25 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-09-04 13:57 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  13. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  14. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  15. 2026-08-30 01:19 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  16. 2026-08-28 21:38 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  17. 2026-08-27 14:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-08-26 14:43 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  19. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  20. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-08-21 23:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-08-20 14:01 UTCOSV refresh
  24. 2026-08-19 17:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-08-18 13:45 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  26. 2026-08-17 13:44 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  27. 2026-08-16 14:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  28. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  29. 2026-08-15 01:27 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  30. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  31. 2026-08-12 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  32. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  33. 2026-08-08 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
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  35. 2026-08-06 13:44 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  36. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  37. 2026-08-05 09:29 UTCEG score recompute
  38. 2026-08-05 09:29 UTCVendor advisory
  39. 2026-08-05 09:29 UTCGHSA enrichmentGHSA-79gf-mr55-pw4g · GitHub severity HIGH · GitHub CVSS 7.8
  40. 2026-08-04 15:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  41. 2026-08-04 10:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  42. 2026-08-04 09:44 UTCEG score recompute
  43. 2026-08-04 09:44 UTCVendor advisory
  44. 2026-08-04 09:44 UTCGHSA enrichmentGHSA-79gf-mr55-pw4g · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-08-03 10:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-02 02:24 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  47. 2026-08-01 04:13 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  48. 2026-07-30 16:25 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  49. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  50. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  51. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  52. 2026-07-25 14:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  53. 2026-07-24 14:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  54. 2026-07-24 07:41 UTCOSV refresh
  55. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  56. 2026-07-23 02:16 UTCEG score recompute
  57. 2026-07-22 23:04 UTCEG score recompute
  58. 2026-07-22 14:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  59. 2026-07-21 15:23 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-07-20 17:05 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-07-19 14:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  62. 2026-07-19 02:27 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  63. 2026-07-18 10:03 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  64. 2026-07-16 17:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  65. 2026-07-15 16:56 UTCEPSS rescoreEPSS 0.2% · 9th percentile

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-49846?
CVE-2022-49846 is a high-severity vulnerability; its CVE record was published on May 1, 2025. In the Linux kernel, the following vulnerability has been resolved: udf: Fix a slab-out-of-bounds write bug in udffindentry() Syzbot reported a slab-out-of-bounds Write bug: loop0: detected capacity change from 0 to 2048 ================================================================== BUG: KASAN:…
When was the CVE record for CVE-2022-49846 published?
The CVE record for CVE-2022-49846 was published on May 1, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 5, 2026; the record at its source may have been updated since.
Is CVE-2022-49846 actively exploited?
CVE-2022-49846 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-49846?
CVE-2022-49846 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-49846?
A fix for CVE-2022-49846 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-49846 are linked in the Vendor Advisories panel on this page.

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