CVE-2024-43845

LOW EPSS 10.8%
Published Aug 17, 20241y ago · Modified Jun 17, 20261w ago
3.3 CVSS 3.1
Low
Find Similar
Published Aug 17, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: udf: Fix bogus checksum computation in udf_rename() Syzbot reports uninitialized memory access in udf_rename() when updating checksum of '..' directory entry of a moved directory. This is indeed true as we pass on-stack diriter.fi to the udf_update_tag() and because that has only struct fileIdentDesc included in it and not the impUse or name fields, the checksumming function is going to checksum random stack contents beyond the end of the structure. This is actually harmless because the following udf_fiiter_write_fi() will recompute the checksum from on-disk buffers where everything is properly included. So all that is needed is just removing the bogus calculation.

CVSS Details

Base Score
3.3
Exploitability
1.8
Impact
1.4
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
10.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-908

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥6.3  –  <6.6.44
linuxlinux_kernel*≥6.7  –  <6.10.3

References 4

  • git.kernel.org https://git.kernel.org/stable/c/27ab33854873e6fb958cb074681a0107cc2ecc4c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/40d7b3ed52449d36143bab8d3e70926aa61a60f4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9c439311c13fc6faab1921441165c9b8b500c83b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fe2ead240c31e8d158713beca9d0681a6e6a53ab
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/27ab33854873e6fb958cb074681a0107cc2ecc4c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/40d7b3ed52449d36143bab8d3e70926aa61a60f4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9c439311c13fc6faab1921441165c9b8b500c83b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fe2ead240c31e8d158713beca9d0681a6e6a53ab
    Patch