CVE-2022-49058

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-03-18. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

cifs: potential buffer overflow in handling symlinks

Smatch printed a warning: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() 'dctx->buf' too small (16 vs u32max)

It's caused because Smatch marks 'link_len' as untrusted since it comes from sscanf(). Add a check to ensure that 'link_len' is not larger than the size of the 'link_str' buffer.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity78% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

February 26, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb5f51756944735ac70cd8bb38637cc202e29c91
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9901b07ba42b39266b34a888e48d7306fd707bee
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/64c4a37ac04eeb43c42d272f6e6c8c12bfcf4304
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/515e7ba11ef043d6febe69389949c8ef5f25e9d0
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4e166a41180be2f1e66bbb6d46448e80a9a5ec05
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3e582749e742e662a8e9bb37cffac62dccaaa1e2
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/22d658c6c5affed10c8907e67160cef0b6c92186
generic

cifs: potential buffer overflow in handling symlinks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1316c28569a80ab3596eeab05bf5e01991e7e739

Vendor Advisories for CVE-2022-49058(9)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-70.141.1.el9_02025-08-05redhat
redhatkernel-0:4.18.0-477.104.1.el8_82025-08-05redhat
redhatkernel-rt-0:5.14.0-70.141.1.rt21.213.el9_02025-08-05redhat
redhatkernel-0:4.18.0-193.162.1.el8_22025-08-04redhat
redhatkernel-0:4.18.0-305.165.1.el8_42025-07-30redhat
redhatkernel-0:4.18.0-372.153.1.el8_62025-07-23redhat
redhatkernel-rt-0:4.18.0-553.62.1.rt7.403.el8_102025-07-16redhat
redhatkernel-0:4.18.0-553.62.1.el8_102025-07-16redhat
redhatkernel-0:5.14.0-284.11.1.el9_22023-05-09redhat
linuxKernel @ 4.9.311—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 rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (11 versions)5.10.113-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—5.17.6-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—5.17.6-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—5.17.6-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 159 total refreshes for this CVE.

  1. 2026-09-16 14:05 UTCEPSS rescore
  2. 2026-09-16 05:11 UTCEPSS rescore
  3. 2026-09-15 03:07 UTCEPSS rescore
  4. 2026-09-13 16:44 UTCEPSS rescore
  5. 2026-09-11 14:50 UTCEPSS rescore
  6. 2026-09-11 09:34 UTCEPSS rescore
  7. 2026-09-08 21:57 UTCEPSS rescore
  8. 2026-09-07 15:59 UTCEPSS rescore
  9. 2026-09-07 04:48 UTCOSV refresh
  10. 2026-09-06 13:45 UTCEPSS rescore
  11. 2026-09-05 15:25 UTCEPSS rescore
  12. 2026-09-04 13:57 UTCEPSS rescore
  13. 2026-09-04 05:04 UTCEPSS rescore
  14. 2026-09-02 14:09 UTCEPSS rescore
  15. 2026-09-01 13:51 UTCEPSS rescore
  16. 2026-08-30 19:15 UTCEPSS rescore
  17. 2026-08-30 01:19 UTCEPSS rescore
  18. 2026-08-28 21:38 UTCEPSS rescore
  19. 2026-08-27 14:22 UTCEPSS rescore
  20. 2026-08-26 14:43 UTCEPSS rescore
  21. 2026-08-25 13:46 UTCEPSS rescore
  22. 2026-08-23 00:17 UTCEPSS rescore
  23. 2026-08-21 23:46 UTCEPSS rescore
  24. 2026-08-20 22:53 UTCEPSS rescore
  25. 2026-08-20 14:31 UTCOSV refresh
Show 75 more
  1. 2026-08-19 17:01 UTCEPSS rescore
  2. 2026-08-18 13:45 UTCEPSS rescore
  3. 2026-08-17 13:44 UTCEPSS rescore
  4. 2026-08-16 14:53 UTCEPSS rescore
  5. 2026-08-16 02:12 UTCEPSS rescore
  6. 2026-08-15 01:27 UTCEPSS rescore
  7. 2026-08-13 21:58 UTCEPSS rescore
  8. 2026-08-12 13:48 UTCEPSS rescore
  9. 2026-08-09 13:44 UTCEPSS rescore
  10. 2026-08-09 13:44 UTCEPSS rescore
  11. 2026-08-08 16:34 UTCEPSS rescore
  12. 2026-08-07 16:24 UTCEPSS rescore
  13. 2026-08-06 13:44 UTCEPSS rescore
  14. 2026-08-05 19:15 UTCEPSS rescore
  15. 2026-08-05 09:35 UTCEG score recompute
  16. 2026-08-05 09:35 UTCVendor advisory
  17. 2026-08-05 09:35 UTCGHSA enrichment
  18. 2026-08-04 15:07 UTCEPSS rescore
  19. 2026-08-04 11:17 UTCEG score recompute
  20. 2026-08-04 11:17 UTCVendor advisory
  21. 2026-08-04 11:17 UTCGHSA enrichment
  22. 2026-08-04 10:35 UTCEPSS rescore
  23. 2026-08-04 09:47 UTCEG score recompute
  24. 2026-08-04 09:47 UTCVendor advisory
  25. 2026-08-04 09:47 UTCGHSA enrichment
  26. 2026-08-03 10:33 UTCEPSS rescore
  27. 2026-08-02 02:24 UTCEPSS rescore
  28. 2026-08-01 04:13 UTCEPSS rescore
  29. 2026-08-01 04:13 UTCEPSS rescore
  30. 2026-07-30 16:25 UTCEPSS rescore
  31. 2026-07-30 01:28 UTCEPSS rescore
  32. 2026-07-28 15:34 UTCEPSS rescore
  33. 2026-07-26 14:52 UTCEPSS rescore
  34. 2026-07-26 14:52 UTCEPSS rescore
  35. 2026-07-25 14:16 UTCEPSS rescore
  36. 2026-07-24 14:41 UTCOSV refresh
  37. 2026-07-24 14:15 UTCEPSS rescore
  38. 2026-07-23 14:16 UTCEPSS rescore
  39. 2026-07-23 14:16 UTCEPSS rescore
  40. 2026-07-23 02:16 UTCEG score recompute
  41. 2026-07-22 23:03 UTCEG score recompute
  42. 2026-07-22 14:06 UTCEPSS rescore
  43. 2026-07-22 14:06 UTCEPSS rescore
  44. 2026-07-21 15:23 UTCEPSS rescore
  45. 2026-07-21 15:23 UTCEPSS rescore
  46. 2026-07-20 17:05 UTCEPSS rescore
  47. 2026-07-19 14:29 UTCEPSS rescore
  48. 2026-07-19 14:29 UTCEPSS rescore
  49. 2026-07-19 02:27 UTCEPSS rescore
  50. 2026-07-19 02:27 UTCEPSS rescore
  51. 2026-07-18 10:03 UTCEPSS rescore
  52. 2026-07-18 10:03 UTCEPSS rescore
  53. 2026-07-16 17:00 UTCEPSS rescore
  54. 2026-07-15 16:56 UTCEPSS rescore
  55. 2026-07-15 16:56 UTCEPSS rescore
  56. 2026-07-15 01:58 UTCEPSS rescore
  57. 2026-07-15 01:58 UTCEPSS rescore
  58. 2026-07-13 22:28 UTCEPSS rescore
  59. 2026-07-13 22:28 UTCEPSS rescore
  60. 2026-07-13 06:11 UTCEPSS rescore
  61. 2026-07-13 06:11 UTCEPSS rescore
  62. 2026-07-12 05:44 UTCEPSS rescore
  63. 2026-07-11 08:25 UTCEPSS rescore
  64. 2026-07-11 08:25 UTCEPSS rescore
  65. 2026-07-09 19:08 UTCEPSS rescore
  66. 2026-07-08 15:13 UTCEPSS rescore
  67. 2026-07-07 13:44 UTCEPSS rescore
  68. 2026-07-07 10:21 UTCOSV refresh
  69. 2026-07-06 16:25 UTCEPSS rescore
  70. 2026-07-06 02:21 UTCEPSS rescore
  71. 2026-07-05 02:28 UTCEPSS rescore
  72. 2026-07-04 06:29 UTCEPSS rescore
  73. 2026-07-01 15:04 UTCEPSS rescore
  74. 2026-06-30 23:21 UTCEPSS rescore
  75. 2026-06-30 23:20 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-49058?
CVE-2022-49058 is a high vulnerability published on February 26, 2025. In the Linux kernel, the following vulnerability has been resolved: cifs: potential buffer overflow in handling symlinks Smatch printed a warning: arch/x86/crypto/poly1305glue.c:198 poly1305update_arch() error: memcpy() 'dctx->buf' too small (16 vs u32max) It's caused because Smatch marks…
When was CVE-2022-49058 disclosed?
CVE-2022-49058 was first published in the National Vulnerability Database on February 26, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-49058 actively exploited?
CVE-2022-49058 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.6% of all scored CVEs.
What is the CVSS score of CVE-2022-49058?
CVE-2022-49058 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-49058?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49058, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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