ipv6: Fix use-after-free in inet6_addr_del().
In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix use-after-free in inet6_addr_del(). syzbot reported use-after-free of inet6_ifaddr in inet6_addr_del(). [0] The cited commit accidentally moved ipv6_del_addr() for mngtmpaddr before reading its ifp->flags for temporary addresses in inet6_addr_del(). Let's move ipv6_del_addr() down to fix the UAF. [0]: BUG: KASAN: slab-use-after-free in inet6_addr_del.constprop.0+0x67a/0x6b0 net/ipv6/addrconf.c:3117 Read of size 4 at addr ffff88807b89c86c by task syz.3.1618/9593 CPU: 0 UID: 0 PID: 9593 Comm: syz.3.1618 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xcd/0x630 mm/kasan/report.c:482 kasan_report+0xe0/0x110 mm/kasan/report.c:595 inet6_addr_del.constprop.0+0x67a/0x6b0 net/ipv6/addrconf.c:3117 addrconf_del_ifaddr+0x11e/0x190 net/ipv6/addrconf.c:3181 inet6_ioctl+0x1e5/0x2b0 net/ipv6/af_inet6.c:582 sock_do_ioctl+0x118/0x280 net/socket.c:1254 sock_ioctl+0x227/0x6b0 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64
CVE-2026-23010
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23010
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ca97dd10424860a3806ad3a9e26b9dce2901ee0c",
"lessThan": "6e89d60b4f03014f7d412ce64b17a840840d490e",
"versionType": "git"
},
{
"status": "affected",
"version": "836deb96383ed9c1a411f172954d74b3f74ec6ac",
"lessThan": "9356b69d03d0f50cce91cebdabd33dda023fbd64",
"versionType": "git"
},
{
"status": "affected",
"version": "cb74207ef98317f8874a0b9780bb339c2eb700b0",
"lessThan": "2684610a9c9c53f262fd864fa5c407e79f304804",
"versionType": "git"
},
{
"status": "affected",
"version": "00b5b7aab9e422d00d5a9d03d7e0760a76b5d57f",
"lessThan": "8b6dcb565e419846bd521e31d5e1f98e4d0e1179",
"versionType": "git"
},
{
"status": "affected",
"version": "00b5b7aab9e422d00d5a9d03d7e0760a76b5d57f",
"lessThan": "ddf96c393a33aef4887e2e406c76c2f8cda1419c",
"versionType": "git"
},
{
"status": "affected",
"version": "851b3bb105c595cc20b8dcc1b4de029061ce2b76",
"versionType": "git"
},
{
"status": "affected",
"version": "6.1.120",
"lessThan": "6.1.162",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.64",
"lessThan": "6.6.122",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.2",
"lessThan": "6.12.67",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.11.11",
"lessThan": "6.12",
"versionType": "semver"
}
],
"programFiles": [
"net/ipv6/addrconf.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.162",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.122",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.67",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.7",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/addrconf.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23010
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #27193 · Revision 1
- Added to Heist Feed
- Publisher date