5.5

CVE-2024-43854

block: initialize integrity buffer to zero before writing it to media

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

block: initialize integrity buffer to zero before writing it to media

Metadata added by bio_integrity_prep is using plain kmalloc, which leads
to random kernel memory being written media.  For PI metadata this is
limited to the app tag that isn't used by kernel generated metadata,
but for non-PI metadata the entire buffer leaks kernel memory.

Fix this by adding the __GFP_ZERO flag to allocations for writes.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.27 < 5.15.165
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.103
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.44
Linux ≫ Linux Kernel Version >= 6.7 < 6.10.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.138
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/129f95948a96105c1fad8e612c9097763e88ac5f
https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644
Patch
https://git.kernel.org/stable/c/3fd11fe4f20756b4c0847f755a64cd96f8c6a005
https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f
Patch
https://git.kernel.org/stable/c/9f4af4cf08f9a0329ade3d938f55d2220c40d0a6
https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2
Patch
https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1
Patch
https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00
Patch
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html