CVE-2022-48816: SUNRPC: lock against ->sock changing during sysfs read
Vulnerability summary
CVE-2022-48816 is a high (CVSS 7.8) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 21% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 11Timeline
- 16-07-2024PublishedVulnerability first disclosed.
- 03-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: lock against ->sock changing during sysfs read ->sock can be set to NULL asynchronously unless ->recv_mutex is held. So it is important to hold that mutex. Otherwise a sysfs read can trigger an oops. Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before handling sysfs reads") appears to attempt to fix this problem, but it only narrows the race window.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.29% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu98 products
- linux< 5.15.0-185.195
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1111.118
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 21a2be1a5145d072deedc7cdc5b2d17380abea75, < cd366b9091a3e6ed8229e4b908e895d20b527dc0 | ≥ a8482488a7d6d320f63a9ee1912dbb5ae5b80a61, < fdc42287ae3f8a35cc2098307f52d7864b4bc8ed | ≥ a8482488a7d6d320f63a9ee1912dbb5ae5b80a61, < 9482ab4540f5bcc869b44c067ae99b5fca16bd07 | ≥ a8482488a7d6d320f63a9ee1912dbb5ae5b80a61, < b49ea673e119f59c71645e2f65b3ccad857c90ee | 77876473912d1bf1ed16bffa1674e5ff0f499f25 | ≥ 5.10.67, < 5.10.271 | ≥ 5.13.19, < 5.14 | 5.14
- linux_kernel≥ 5.10.67, < 5.11 | ≥ 5.13.19, < 5.16.10 | 5.17:rc1 | 5.17:rc2 | 5.17:rc3
Debian1 product
- linux< 5.16.10-1
3 vendors · 101 products
