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CVE-2022-48636
s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
High7.8EPSS 0.24%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup pointer being NULL. The pavgroup pointer is checked on the entrance of the function but without the lcu->lock being held. Therefore there is a race window between dasd_alias_get_start_dev() and _lcu_update() which sets pavgroup to NULL with the lcu->lock held. Fix by checking the pavgroup pointer with lcu->lock held.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < d86b4267834e6d4af62e3073e48166e349ab1b70
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < 49f401a98b318761ca2e15d4c7869a20043fbed4
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < aaba5ff2742043705bc4c02fd0b2b246e2e16da1
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < 2e473351400e3dd66f0b71eddcef82ee45a584c1
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < d3a67c21b18f33c79382084af556557c442f12a6
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < 650a2e79d176db753654d3dde88e53a2033036ac
- affected 8e09f21574ea3028d5629e5de759e0b196c690c5 – < db7ba07108a48c0f95b74fabbfd5d63e924f992d
- affected 2.6.25
- unaffected < 2.6.25
- unaffected 4.9.330 – ≤ 4.9.*
- unaffected 4.14.295 – ≤ 4.14.*
- unaffected 4.19.260 – ≤ 4.19.*
- unaffected 5.4.215 – ≤ 5.4.*
- unaffected 5.10.146 – ≤ 5.10.*
- unaffected 5.15.71 – ≤ 5.15.*
- unaffected 5.19.12 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References (8)
- https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-48636)Record last updated .