CVE-2022-50095
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-50095
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50095.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-50095
- Downstream
- Related
- Published
- 2025-06-18T11:02:33Z
- Modified
- 2025-10-08T13:04:34.030025Z
- Summary
- posix-cpu-timers: Cleanup CPU timers before freeing them during exec
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer.
When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exititimers, posixcputimerdel cannot find the task because the timer still points out to the old PID.
That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueuelist. exititimers will still release their memory, and when that list is later processed, it leads to a use-after-free.
Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-after-free.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/541840859ace9c2ccebc32fa9e376c7bd3def490
- https://git.kernel.org/stable/c/9e255ed238fc67058df87b0388ad6d4b2ef3a2bd
- https://git.kernel.org/stable/c/b2fc1723eb65abb83e00d5f011de670296af0b28
- https://git.kernel.org/stable/c/e362359ace6f87c201531872486ff295df306d13
- https://git.kernel.org/stable/c/e8cb6e8fd9890780f1bfcf5592889e1b879e779c
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
-
Introduced55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59Fixed541840859ace9c2ccebc32fa9e376c7bd3def490
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59Fixed9e255ed238fc67058df87b0388ad6d4b2ef3a2bd
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59Fixede8cb6e8fd9890780f1bfcf5592889e1b879e779c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59Fixedb2fc1723eb65abb83e00d5f011de670296af0b28
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59Fixede362359ace6f87c201531872486ff295df306d13
Affected versions
v5.*
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.10.1
v5.10.10
v5.10.100
v5.10.101
v5.10.102
v5.10.103
v5.10.104
v5.10.105
v5.10.106
v5.10.107
v5.10.108
v5.10.109
v5.10.11
v5.10.110
v5.10.111
v5.10.112
v5.10.113
v5.10.114
v5.10.115
v5.10.116
v5.10.117
v5.10.118
v5.10.119
v5.10.12
v5.10.120
v5.10.121
v5.10.122
v5.10.123
v5.10.124
v5.10.125
v5.10.126
v5.10.127
v5.10.128
v5.10.129
v5.10.13
v5.10.130
v5.10.131
v5.10.132
v5.10.133
v5.10.134
v5.10.135
v5.10.136
v5.10.14
v5.10.15
v5.10.16
v5.10.17
v5.10.18
v5.10.19
v5.10.2
v5.10.20
v5.10.21
v5.10.22
v5.10.23
v5.10.24
v5.10.25
v5.10.26
v5.10.27
v5.10.28
v5.10.29
v5.10.3
v5.10.30
v5.10.31
v5.10.32
v5.10.33
v5.10.34
v5.10.35
v5.10.36
v5.10.37
v5.10.38
v5.10.39
v5.10.4
v5.10.40
v5.10.41
v5.10.42
v5.10.43
v5.10.44
v5.10.45
v5.10.46
v5.10.47
v5.10.48
v5.10.49
v5.10.5
v5.10.50
v5.10.51
v5.10.52
v5.10.53
v5.10.54
v5.10.55
v5.10.56
v5.10.57
v5.10.58
v5.10.59
v5.10.6
v5.10.60
v5.10.61
v5.10.62
v5.10.63
v5.10.64
v5.10.65
v5.10.66
v5.10.67
v5.10.68
v5.10.69
v5.10.7
v5.10.70
v5.10.71
v5.10.72
v5.10.73
v5.10.74
v5.10.75
v5.10.76
v5.10.77
v5.10.78
v5.10.79
v5.10.8
v5.10.80
v5.10.81
v5.10.82
v5.10.83
v5.10.84
v5.10.85
v5.10.86
v5.10.87
v5.10.88
v5.10.89
v5.10.9
v5.10.90
v5.10.91
v5.10.92
v5.10.93
v5.10.94
v5.10.95
v5.10.96
v5.10.97
v5.10.98
v5.10.99
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.15.1
v5.15.10
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
v5.15.19
v5.15.2
v5.15.20
v5.15.21
v5.15.22
v5.15.23
v5.15.24
v5.15.25
v5.15.26
v5.15.27
v5.15.28
v5.15.29
v5.15.3
v5.15.30
v5.15.31
v5.15.32
v5.15.33
v5.15.34
v5.15.35
v5.15.36
v5.15.37
v5.15.38
v5.15.39
v5.15.4
v5.15.40
v5.15.41
v5.15.42
v5.15.43
v5.15.44
v5.15.45
v5.15.46
v5.15.47
v5.15.48
v5.15.49
v5.15.5
v5.15.50
v5.15.51
v5.15.52
v5.15.53
v5.15.54
v5.15.55
v5.15.56
v5.15.57
v5.15.58
v5.15.59
v5.15.6
v5.15.60
v5.15.7
v5.15.8
v5.15.9
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.18.1
v5.18.10
v5.18.11
v5.18.12
v5.18.13
v5.18.14
v5.18.15
v5.18.16
v5.18.17
v5.18.2
v5.18.3
v5.18.4
v5.18.5
v5.18.6
v5.18.7
v5.18.8
v5.18.9
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.19.1
v5.6
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8
Database specific
{
"vanir_signatures": [
{
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"225697020672714628434505855076941551550",
"178578590242474719040852711906321805693",
"24101414201049764627804665420800702068",
"123720263213955697191022741961394656122"
]
},
"id": "CVE-2022-50095-143eebf7",
"deprecated": false,
"target": {
"file": "fs/exec.c"
},
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9e255ed238fc67058df87b0388ad6d4b2ef3a2bd"
},
{
"signature_version": "v1",
"digest": {
"length": 1969.0,
"function_hash": "268182533101940145622005647270612643683"
},
"id": "CVE-2022-50095-1a68765f",
"deprecated": false,
"target": {
"file": "fs/exec.c",
"function": "begin_new_exec"
},
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e362359ace6f87c201531872486ff295df306d13"
},
{
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"225697020672714628434505855076941551550",
"178578590242474719040852711906321805693",
"24101414201049764627804665420800702068",
"123720263213955697191022741961394656122"
]
},
"id": "CVE-2022-50095-24971124",
"deprecated": false,
"target": {
"file": "fs/exec.c"
},
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@541840859ace9c2ccebc32fa9e376c7bd3def490"
},
{
"signature_version": "v1",
"digest": {
"length": 1969.0,
"function_hash": "268182533101940145622005647270612643683"
},
"id": "CVE-2022-50095-358696e3",
"deprecated": false,
"target": {
"file": "fs/exec.c",
"function": "begin_new_exec"
},
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b2fc1723eb65abb83e00d5f011de670296af0b28"
},
{
"signature_version": "v1",
"digest": {
"length": 1982.0,
"function_hash": "261508218438556194256648055343631953234"
},
"id": "CVE-2022-50095-49affa4e",
"deprecated": false,
"target": {
"file": "fs/exec.c",
"function": "begin_new_exec"
},
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e8cb6e8fd9890780f1bfcf5592889e1b879e779c"
},
{
"signature_version": "v1",
"digest": {
"length": 1997.0,
"function_hash": "306383432699049148448873234978742941244"
},
"id": "CVE-2022-50095-756df2c3",
"deprecated": false,
"target": {
"file": "fs/exec.c",
"function": "begin_new_exec"
},
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9e255ed238fc67058df87b0388ad6d4b2ef3a2bd"
},
{
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"225697020672714628434505855076941551550",
"178578590242474719040852711906321805693",
"24101414201049764627804665420800702068",
"123720263213955697191022741961394656122"
]
},
"id": "CVE-2022-50095-a7e498b5",
"deprecated": false,
"target": {
"file": "fs/exec.c"
},
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b2fc1723eb65abb83e00d5f011de670296af0b28"
},
{
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"225697020672714628434505855076941551550",
"178578590242474719040852711906321805693",
"24101414201049764627804665420800702068",
"123720263213955697191022741961394656122"
]
},
"id": "CVE-2022-50095-d23f5147",
"deprecated": false,
"target": {
"file": "fs/exec.c"
},
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e362359ace6f87c201531872486ff295df306d13"
},
{
"signature_version": "v1",
"digest": {
"length": 1824.0,
"function_hash": "133574568572355761620317295275039091817"
},
"id": "CVE-2022-50095-d5ade320",
"deprecated": false,
"target": {
"file": "fs/exec.c",
"function": "begin_new_exec"
},
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@541840859ace9c2ccebc32fa9e376c7bd3def490"
},
{
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"225697020672714628434505855076941551550",
"178578590242474719040852711906321805693",
"24101414201049764627804665420800702068",
"123720263213955697191022741961394656122"
]
},
"id": "CVE-2022-50095-f44dbad5",
"deprecated": false,
"target": {
"file": "fs/exec.c"
},
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e8cb6e8fd9890780f1bfcf5592889e1b879e779c"
}
]
}