Ubuntu.comUB:CVE-2024-43856CVE-2024-43856
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
In the Linux kernel, the following vulnerability has been resolved:
dma: fix call order in dmam_free_coherent
dmam_free_coherent() frees a DMA allocation, which makes the
freed vaddr available for reuse, then calls devres_destroy()
to remove and free the data structure used to track the DMA
allocation. Between the two calls, it is possible for a
concurrent task to make an allocation with the same vaddr
and add it to the devres list.
If this happens, there will be two entries in the devres list
with the same vaddr and devres_destroy() can free the wrong
entry, triggering the WARN_ON() in dmam_match.
Fix by destroying the devres entry before freeing the DMA
allocation.
kokonut //net/encryption
http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
References
git.kernel.org/linus/28e8b7406d3a1f5329a03aa25a43aa28e087cb20 (6.11-rc1)
git.kernel.org/stable/c/1fe97f68fce1ba24bf823bfb0eb0956003473130
git.kernel.org/stable/c/22094f5f52e7bc16c5bf9613365049383650b02e
git.kernel.org/stable/c/257193083e8f43907e99ea633820fc2b3bcd24c7
git.kernel.org/stable/c/28e8b7406d3a1f5329a03aa25a43aa28e087cb20
git.kernel.org/stable/c/2f7bbdc744f2e7051d1cb47c8e082162df1923c9
git.kernel.org/stable/c/87b34c8c94e29fa01d744e5147697f592998d954
git.kernel.org/stable/c/f993a4baf6b622232e4c190d34c220179e5d61eb
git.kernel.org/stable/c/fe2d246080f035e0af5793cb79067ba125e4fb63
launchpad.net/bugs/cve/CVE-2024-43856
nvd.nist.gov/vuln/detail/CVE-2024-43856
security-tracker.debian.org/tracker/CVE-2024-43856
www.cve.org/CVERecord?id=CVE-2024-43856
Related
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low