net: rds: fix memory leak in rds_recvmsg (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.24 % · percentile 15 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: net: rds: fix memory leak in rds_recvmsg Syzbot reported memory leak in rds. The problem was in unputted refcount in case of error. int rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int msg_flags) { ... if (!rds_next_incoming(rs, &inc)) { ... } After this "if" inc refcount incremented and if (rds_cmsg_recv(inc, msg, rs)) { ret = -EFAULT; goto out; } ... out: return ret; } in case of rds_cmsg_recv() fail the refcount won't be decremented. And it's easy to see from ftrace log, that rds_inc_addref() don't have rds_inc_put() pair in rds_recvmsg() after rds_cmsg_recv() 1) | rds_recvmsg() { 1) 3.721 us | rds_inc_addref(); 1) 3.853 us | rds_message_inc_copy_to_user(); 1) + 10.395 us | rds_cmsg_recv(); 1) + 34.260 us | }
Weaknesses (CWE)
- CWE-401 — Missing Release of Memory after Effective Lifetime
References
- https://git.kernel.org/stable/c/8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f
- https://git.kernel.org/stable/c/423c6939758fb3b9cf5abbd1e7792068a5c4ae8c
- https://git.kernel.org/stable/c/1f79bc8ae81c05eb112a53f981cb2c244ee50d02
- https://git.kernel.org/stable/c/06b7cb0194bd1ede0dd27f3a946e7c0279fba44a
- https://git.kernel.org/stable/c/2038cd15eacdf7512755c27686822e0052eb9042
- https://git.kernel.org/stable/c/5946fbf48355f5a8caeff72580c7658da5966b86
- https://git.kernel.org/stable/c/b25b60d076164edb3025e85aabd2cf50a5215b91
- https://git.kernel.org/stable/c/49bfcbfd989a8f1f23e705759a6bb099de2cff9f
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-33897
- GCVE · GCVE-0-2021-47249
CERT-FR advisories
- CERTFR-2024-AVI-0526 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0496 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 2.6.30 < 4.4.274cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.5 < 4.9.274cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.238cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.196cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.128cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.46cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.12.13cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb < 8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f ; affected bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb < 423c6939758fb3b9cf5abbd1e7792068a5c4ae8c ; affected bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb < 1f79bc8ae81c05eb112a53f981cb2c244ee50d02 ; affected bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb < 06b7cb0194bd1ede0dd27f3a946e7c0279fba44a ; affected bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb < 2038cd15eacdf7512755c27686822e0052eb9042 ; affected bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb < 5946fbf48355f5a8caeff72580c7658da5966b86 |
| Linux · Linux | affected 2.6.30 ; unaffected 0 < 2.6.30 ; unaffected 4.4.274 ≤ 4.4.* ; unaffected 4.9.274 ≤ 4.9.* ; unaffected 4.14.238 ≤ 4.14.* ; unaffected 4.19.196 ≤ 4.19.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |