CVE-2022-48786
vsock: remove vsock from connected table when connect is interrupted by a signal
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: vsock: remove vsock from connected table when connect is interrupted by a signal vsock_connect() expects that the socket could already be in the TCP_ESTABLISHED state when the connecting task wakes up with a signal pending. If this happens the socket will be in the connected table, and it is not removed when the socket state is reset. In this situation it's common for the process to retry connect(), and if the connection is successful the socket will be added to the connected table a second time, corrupting the list. Prevent this by calling vsock_remove_connected() if a signal is received while waiting for a connection. This is harmless if the socket is not in the connected table, and if it is in the table then removing it will prevent list corruption from a double add. Note for backporting: this patch requires d5afa82c977e ("vsock: correct removal of socket from the list"), which is in all current stable trees except 4.9.y.
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 |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 83% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < 0bb88f3f7e8d506f3efe46d694964117e20efbfc
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < e3b3939fd137aab6d00d54bee0ee9244b286a608
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < 2910bcb9f67551a45397735e47b6d456eb8cd549
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < 5f326fe2aef411a6575628f92bd861463ea91df7
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < 87cd1bbd6677411e17369cd4b7389ab1e1fdba44
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < 787468ee7a435777521d33399d012fd591ae2f94
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < addd62a8cb6fa90aa322365c62487da61f6baab8
- affected d021c344051af91f42c5ba9fdedc176740cbd238 – < b9208492fcaecff8f43915529ae34b3bcb03877c
- affected 3.9
- unaffected < 3.9
- unaffected 4.9.303 – ≤ 4.9.*
- unaffected 4.14.268 – ≤ 4.14.*
- unaffected 4.19.231 – ≤ 4.19.*
- unaffected 5.4.181 – ≤ 5.4.*
- unaffected 5.10.102 – ≤ 5.10.*
- unaffected 5.15.25 – ≤ 5.15.*
- unaffected 5.16.11 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (8)
- https://git.kernel.org/stable/c/0bb88f3f7e8d506f3efe46d694964117e20efbfc (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e3b3939fd137aab6d00d54bee0ee9244b286a608 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/2910bcb9f67551a45397735e47b6d456eb8cd549 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/5f326fe2aef411a6575628f92bd861463ea91df7 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/87cd1bbd6677411e17369cd4b7389ab1e1fdba44 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/787468ee7a435777521d33399d012fd591ae2f94 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/addd62a8cb6fa90aa322365c62487da61f6baab8 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/b9208492fcaecff8f43915529ae34b3bcb03877c (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-2022-48786)Record last updated .