CVE-2022-1205
Linux kernel: use-after-free can lead to denial of service
- Risk score
- 54/100
- CVSS
- 4.7 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 31 Aug 2022
Open in the live forecast Today's forecast
What to know
- What it is
- A NULL pointer dereference flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system.
- Affected
- Linux kernel
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- Public proof of concept
Story map
At a glance
Linux kernel: Amber, patch this week. In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: restore network header before routing and forwarding ipv6_srh_rcv() runs with skb->data at the Segment Routing Header (SRH) while skb_network_header() points at the IPv6 header. When segments_left > 0, ipv6_srh_rcv() previously restored the …
The flaws
- CVE-2022-1205: Use-after-free can lead to denial of service (CVSS 4.7 · EPSS 0%)
- CVE-2026-98096: Out-of-bounds write (CVSS 7.4 · EPSS 1%)
- CVE-2026-98115: Race condition (CVSS 8.8 · EPSS 0%)
- CVE-2026-98117: Use-after-free (CVSS 7.8 · EPSS 0%)
The fix
Fix: Apply the vendor's security update; see the linked advisory.
Who is exposed: Linux kernel
Where it stands
- Public proof of concept
How it unfolded
- 3 Nov, Ubuntu security notices (official): USN-8962-1: Linux kernel (Azure CVM) vulnerabilities
- 3 Nov, Ubuntu security notices (official): USN-8963-1: Linux kernel (NVIDIA Tegra) vulnerabilities
- 3 Nov, Ubuntu security notices (official): USN-8961-1: Linux kernel vulnerabilities
Connects to
- Same weakness: Use-after-free (CWE-416). 400 other warnings in 30 days
- Same product: Earlier Linux kernel warnings. 105 in the last 90 days
Why it is Yellow
- CVSS 4.7 medium
- Public exploit or proof of concept referenced
- On your watchlist: linux kernel
- Named in a government or vendor bulletin
Government and vendor bulletins
References
- https://ubuntu.com/security/notices/USN-8961-1
- https://ubuntu.com/security/notices/USN-8963-1
- https://ubuntu.com/security/notices/USN-8962-1
- https://access.redhat.com/security/cve/CVE-2022-1205
- https://bugzilla.redhat.com/show_bug.cgi?id=2071047
- https://github.com/torvalds/linux/commit/82e31755e55fbcea6a9dfaae5fe4860ade17cbc0
- https://github.com/torvalds/linux/commit/fc6d01ff9ef03b66d4a3a23b46fc3c3d8cf92009
- https://www.openwall.com/lists/oss-security/2022/04/02/4
- https://access.redhat.com/security/cve/CVE-2022-1205
- https://bugzilla.redhat.com/show_bug.cgi?id=2071047
Original description
A NULL pointer dereference flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system.
Last activity 3 Nov 2026. Patch Forecast updates every hour.