CVE-2024-40944
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-40944
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-40944.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-40944
- Downstream
- Related
- Published
- 2024-07-12T12:25:18.490Z
- Modified
- 2025-11-20T04:59:28.443368Z
- Summary
- x86/kexec: Fix bug with call depth tracking
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
x86/kexec: Fix bug with call depth tracking
The call to ccplatformhas() triggers a fault and system crash if call depth tracking is active because the GS segment has been reset by loadsegments() and GSBASE is now 0 but call depth tracking uses per-CPU variables to operate.
Call ccplatformhas() earlier in the function when GS is still valid.
[ bp: Massage. ]
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5d8213864ade86b48fc492584ea86d65a62f892eFixedd91ddd05082691e69b30744825d18ae799293258
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5d8213864ade86b48fc492584ea86d65a62f892eFixed2cfb464669b645a9b98478b74f2bcea9860dcff1
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5d8213864ade86b48fc492584ea86d65a62f892eFixed93c1800b3799f17375989b0daf76497dd3e80922
Affected versions
v6.*
v6.1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.10-rc1
v6.10-rc2
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.4
v6.6.5
v6.6.6
v6.6.7
v6.6.8
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7
v6.9.1
v6.9.2
v6.9.3
v6.9.4
v6.9.5
Database specific
vanir_signatures
[
{
"id": "CVE-2024-40944-01496b93",
"target": {
"file": "arch/x86/kernel/machine_kexec_64.c"
},
"digest": {
"threshold": 0.9,
"line_hashes": [
"183291612959197873458002235326019136928",
"39469507874142636614205077619294856480",
"339913556611383866748860739492089590181",
"148611980680384326579367328613391112667",
"214681134128905427067193911773782341217",
"199540345312240989073821431561164033688",
"233928038648976238378777079376271327124",
"183245202804745579154199912004412824079",
"3823813794675531111050141155653917035"
]
},
"deprecated": false,
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d91ddd05082691e69b30744825d18ae799293258",
"signature_version": "v1"
},
{
"id": "CVE-2024-40944-17afbf0a",
"target": {
"file": "arch/x86/kernel/machine_kexec_64.c"
},
"digest": {
"threshold": 0.9,
"line_hashes": [
"183291612959197873458002235326019136928",
"39469507874142636614205077619294856480",
"339913556611383866748860739492089590181",
"148611980680384326579367328613391112667",
"214681134128905427067193911773782341217",
"199540345312240989073821431561164033688",
"233928038648976238378777079376271327124",
"183245202804745579154199912004412824079",
"3823813794675531111050141155653917035"
]
},
"deprecated": false,
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@93c1800b3799f17375989b0daf76497dd3e80922",
"signature_version": "v1"
},
{
"id": "CVE-2024-40944-734663ee",
"target": {
"file": "arch/x86/kernel/machine_kexec_64.c",
"function": "machine_kexec"
},
"digest": {
"function_hash": "286317511456156023962342236815421488383",
"length": 1099.0
},
"deprecated": false,
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@93c1800b3799f17375989b0daf76497dd3e80922",
"signature_version": "v1"
},
{
"id": "CVE-2024-40944-fcb7253c",
"target": {
"file": "arch/x86/kernel/machine_kexec_64.c",
"function": "machine_kexec"
},
"digest": {
"function_hash": "286317511456156023962342236815421488383",
"length": 1099.0
},
"deprecated": false,
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d91ddd05082691e69b30744825d18ae799293258",
"signature_version": "v1"
}
]