by Kastro
Paper/Archive/CVE-2022-49770

CVE-2022-49770

Linux Linux — ceph: avoid putting the realm twice when decoding snaps fails

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 47.3.473 × 209.5No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: ceph: avoid putting the realm twice when decoding snaps fails When decoding the snaps fails it maybe leaving the 'first_realm' and 'realm' pointing to the same snaprealm memory. And then it'll put it twice and could cause random use-after-free, BUG_ON, etc issues.

Affected

ProductAffectedFixed inSource
Linux982d6011bc30a26e8a3d546e0e7fc7db2c255d85 – < 274e4c79a3a2a24fba7cfe0e41113f1138785c37274e4c79a3a2a24fba7cfe0e41113f1138785c37CNA
Linux982d6011bc30a26e8a3d546e0e7fc7db2c255d85 – < cb7495fe957526555782ce0723f79ce92a6db22ecb7495fe957526555782ce0723f79ce92a6db22eCNA
Linux982d6011bc30a26e8a3d546e0e7fc7db2c255d85 – < 044bc6d3c2c0e9090b0841e7b723875756534b45044bc6d3c2c0e9090b0841e7b723875756534b45CNA
Linux982d6011bc30a26e8a3d546e0e7fc7db2c255d85 – < 2f6e2de3a5289004650118b61f138fe7c28e19052f6e2de3a5289004650118b61f138fe7c28e1905CNA
Linux982d6011bc30a26e8a3d546e0e7fc7db2c255d85 – < fd879c83e87735ab8f00ef7755752cf0cbae24b2fd879c83e87735ab8f00ef7755752cf0cbae24b2CNA
Linux982d6011bc30a26e8a3d546e0e7fc7db2c255d85 – < 51884d153f7ec85e18d607b2467820a90e0f435951884d153f7ec85e18d607b2467820a90e0f4359CNA
Linux4.04.19.268CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/274e4c79a3a2a24fba7cfe0e41113f1138785c37refgit.kernel.org/stable/c/cb7495fe957526555782ce0723f79ce92a6db22erefgit.kernel.org/stable/c/044bc6d3c2c0e9090b0841e7b723875756534b45refgit.kernel.org/stable/c/2f6e2de3a5289004650118b61f138fe7c28e1905refgit.kernel.org/stable/c/fd879c83e87735ab8f00ef7755752cf0cbae24b2refgit.kernel.org/stable/c/51884d153f7ec85e18d607b2467820a90e0f4359