5.5

CVE-2022-49762: ntfs: check overflow when iterating ATTR_RECORDs

Analyzed
AliasesUBUNTU-CVE-2022-49762DEBIAN-CVE-2022-49762
Published 01-05-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49762 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
SUSE-SU-2025:01966-1SUSE-SU-2025:02173-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs: check overflow when iterating ATTR_RECORDs Kernel iterates over ATTR_RECORDs in mft record in ntfs_attr_find(). Because the ATTR_RECORDs are next to each other, kernel can get the next ATTR_RECORD from end address of current ATTR_RECORD, through current ATTR_RECORD length field. The problem is that during iteration, when kernel calculates the end address of current ATTR_RECORD, kernel may trigger an integer overflow bug in executing `a = (ATTR_RECORD*)((u8*)a + le32_to_cpu(a->length))`. This may wrap, leading to a forever iteration on 32bit systems. This patch solves it by adding some checks on calculating end address of current ATTR_RECORD during iteration.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu114 products
  • linuxAll versions (No fix recorded) | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5559eb5809353a83a40a1e4e7f066431c7b83020 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 86f36de14dce5802856bb7a5921d74439db00b64 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 45683723f6b53e39e8a4cec0894e61fd6ec71989 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b612f924f296408d7d02fb4cd01218afd4ed7184 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 957732a09c3828267c2819d31c425aa793dd475b | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b63ddb3ba61e2d3539f87e095c881e552bc45dab | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 785b2af9654b8beac55644e36da0085c5d776361 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 63095f4f3af59322bea984a6ae44337439348fe0 | 2.6.12
  • linux_kernel< 4.9.334 | ≥ 4.10, < 4.14.300 | ≥ 4.15, < 4.19.267 | ≥ 4.20, < 5.4.225 | ≥ 5.5, < 5.10.156 | ≥ 5.11, < 5.15.80 | ≥ 5.16, < 6.0.10
Debian1 product
  • linux< 6.0.10-1

3 vendors · 117 products

References

12 links
Show all 12 references