net/hsr: fix NULL pointer dereference in prp_get_untagged_frame()
In the Linux kernel, the following vulnerability has been resolved: net/hsr: fix NULL pointer dereference in prp_get_untagged_frame() prp_get_untagged_frame() calls __pskb_copy() to create frame->skb_std but doesn't check if the allocation failed. If __pskb_copy() returns NULL, skb_clone() is called with a NULL pointer, causing a crash: Oops: general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f] CPU: 0 UID: 0 PID: 5625 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:skb_clone+0xd7/0x3a0 net/core/skbuff.c:2041 Code: 03 42 80 3c 20 00 74 08 4c 89 f7 e8 23 29 05 f9 49 83 3e 00 0f 85 a0 01 00 00 e8 94 dd 9d f8 48 8d 6b 7e 49 89 ee 49 c1 ee 03 <43> 0f b6 04 26 84 c0 0f 85 d1 01 00 00 44 0f b6 7d 00 41 83 e7 0c RSP: 0018:ffffc9000d00f200 EFLAGS: 00010207 RAX: ffffffff892235a1 RBX: 0000000000000000 RCX: ffff88803372a480 RDX: 0000000000000000 RSI: 0000000000000820 RDI: 0000000000000000 RBP: 000000000000007e R08: ffffffff8f7d0f77 R09: 1ffffffff1efa1ee R10: dffffc0000000000 R11: fffffbfff1efa1ef R12: dffffc0000000000 R13: 0000000000000820 R14: 000000000000000f R15: ffff88805144cc00 FS: 0000555557f6d500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555581d35808 CR3: 000000005040e000 CR4
CVE-2025-68776
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-2025-68776
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": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "3ce95a57d8a1f0e20b637cdeddaaed81831ca819",
"versionType": "git"
},
{
"status": "affected",
"version": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "c851e43b88b40bb7c20176c51cbf4f8c8d960dd9",
"versionType": "git"
},
{
"status": "affected",
"version": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "7be6d25f4d974e44918ba3a5d58ebb9d36879087",
"versionType": "git"
},
{
"status": "affected",
"version": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "8f289fa12926aae44347ca7d490e216555d8f255",
"versionType": "git"
},
{
"status": "affected",
"version": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "1742974c24a9c1f1fd2e5edca0cbaccb720b397a",
"versionType": "git"
},
{
"status": "affected",
"version": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "6220d38a08f8837575cd8f830928b49a3a5a5095",
"versionType": "git"
},
{
"status": "affected",
"version": "f266a683a4804dc499efc6c2206ef68efed029d0",
"lessThan": "188e0fa5a679570ea35474575e724d8211423d17",
"versionType": "git"
}
],
"programFiles": [
"net/hsr/hsr_forward.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/hsr/hsr_forward.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-68776
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27127 · Revision 1
- Added to Heist Feed
- Publisher date