CVE-2022-49429: RDMA/hfi1: Prevent panic when SDMA is disabled
Vulnerability summary
CVE-2022-49429 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 19.2% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 26-02-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Prevent panic when SDMA is disabled If the hfi1 module is loaded with HFI1_CAP_SDMA off, a call to hfi1_write_iter() will dereference a NULL pointer and panic. A typical stack frame is: sdma_select_user_engine [hfi1] hfi1_user_sdma_process_request [hfi1] hfi1_write_iter [hfi1] do_iter_readv_writev do_iter_write vfs_writev do_writev do_syscall_64 The fix is to test for SDMA in hfi1_write_iter() and fail the I/O with EINVAL.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.27% 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.
Ubuntu112 products
- linuxAll versions (No fix recorded) | < 4.15.0-192.203 | < 5.4.0-126.142 | < 5.15.0-47.51
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1140.151 | < 5.4.0-1085.92 | < 5.15.0-1019.23
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < 33794e8e9bcb4affc0ebff9cdec85acc8b8a1762 | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < 0e4dda8b3f4c07ee9ea670a10ea3171a5e63a86f | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < e60ad83f645ee6fadd5a8057ba267aeec54f08fe | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < cc80d3c37cec9d6ddb140483647901bc7cc6c31d | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < 32e6aea33944f364d51cd263e4cd236393a188b6 | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < 29952ab85d6c3fe0b7909d9a737f10c58bf6824d | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < 22e7e400fd1a890db2ea13686324aff50e972f4f | ≥ 0cb2aa690c7ef14ad1f544288349abb5434bb75d, < 629e052d0c98e46dde9f0824f0aa437f678d9b8f | 4.9
- linux_kernel< 4.14.283 | ≥ 4.15, < 4.19.247 | ≥ 4.20, < 5.4.198 | ≥ 5.5, < 5.10.121 | ≥ 5.11, < 5.15.46 | ≥ 5.16, < 5.17.14 | ≥ 5.18, < 5.18.3
Debian1 product
- linux< 5.18.5-1
3 vendors · 115 products
