NVD

CVE-2026-53111 Detail

Received

This CVE record has recently been published to the CVE List and has been included within the NVD dataset.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap The bpf_lwt_xmit_push_encap helper needs to access skb_dst(skb)->dev to calculate the needed headroom: err = skb_cow_head(skb, len + LL_RESERVED_SPACE(skb_dst(skb)->dev)); But skb->_skb_refdst may not be initialized when the skb is set up by bpf_prog_test_run_skb function. Executing bpf_lwt_push_ip_encap function in this scenario will trigger null pointer dereference, causing a kernel crash as Yinhao reported: [ 105.186365] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 105.186382] #PF: supervisor read access in kernel mode [ 105.186388] #PF: error_code(0x0000) - not-present page [ 105.186393] PGD 121d3d067 P4D 121d3d067 PUD 106c83067 PMD 0 [ 105.186404] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 105.186412] CPU: 3 PID: 3250 Comm: poc Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 105.186423] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 105.186427] RIP: 0010:bpf_lwt_push_ip_encap+0x1eb/0x520 [ 105.186443] Code: 0f 84 de 01 00 00 0f b7 4a 04 66 85 c9 0f 85 47 01 00 00 31 c0 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8b 73 58 48 83 e6 fe <48> 8b 36 0f b7 be ec 00 00 00 0f b7 b6 e6 00 00 00 01 fe 83 e6 f0 [ 105.186449] RSP: 0018:ffffbb0e0387bc50 EFLAGS: 00010246 [ 105.186455] RAX: 000000000000004e RBX: ffff94c74e036500 RCX: ffff94c74874da00 [ 105.186460] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff94c74e036500 [ 105.186463] RBP: 0000000000000001 R08: 0000000000000002 R09: 0000000000000000 [ 105.186467] R10: ffffbb0e0387bd50 R11: 0000000000000000 R12: ffffbb0e0387bc98 [ 105.186471] R13: 0000000000000014 R14: 0000000000000000 R15: 0000000000000002 [ 105.186484] FS: 00007f166aa4d680(0000) GS:ffff94c8b7780000(0000) knlGS:0000000000000000 [ 105.186490] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.186494] CR2: 0000000000000000 CR3: 000000015eade001 CR4: 0000000000770ee0 [ 105.186499] PKRU: 55555554 [ 105.186502] Call Trace: [ 105.186507] <TASK> [ 105.186513] bpf_lwt_xmit_push_encap+0x2b/0x40 [ 105.186522] bpf_prog_a75eaad51e517912+0x41/0x49 [ 105.186536] ? kvm_clock_get_cycles+0x18/0x30 [ 105.186547] ? ktime_get+0x3c/0xa0 [ 105.186554] bpf_test_run+0x195/0x320 [ 105.186563] ? bpf_test_run+0x10f/0x320 [ 105.186579] bpf_prog_test_run_skb+0x2f5/0x4f0 [ 105.186590] __sys_bpf+0x69c/0xa40 [ 105.186603] __x64_sys_bpf+0x1e/0x30 [ 105.186611] do_syscall_64+0x59/0x110 [ 105.186620] entry_SYSCALL_64_after_hwframe+0x76/0xe0 [ 105.186649] RIP: 0033:0x7f166a97455d Temporarily add the setting of skb->_skb_refdst before bpf_test_run to resolve the issue.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/5500913516e071dbe23e5a404c861dd2d82c9589	kernel.org
https://git.kernel.org/stable/c/599905c3f10bb83e6e6881d5a7f5cea5df07dc23	kernel.org
https://git.kernel.org/stable/c/5c8d1f91fc4898d79f29d79c1a6f7c2b3ee66fb0	kernel.org
https://git.kernel.org/stable/c/94f95328b9070909b5b875c647b17a11d3d85567	kernel.org
https://git.kernel.org/stable/c/972787479ee73006fddb5e59ab5c8e733810ff42	kernel.org
https://git.kernel.org/stable/c/c7ad31fb948fdd4905263f4324160682c3fa7bc6	kernel.org

Weakness Enumeration

CWE-ID	CWE Name	Source

Change History

1 change records found show changes

New CVE Received from kernel.org 6/24/2026 1:17:25 PM

Action	Type	New Value
Added	Description	Record truncated, showing 2048 of 2755 characters. View Entire Change Record In the Linux kernel, the following vulnerability has been resolved: bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap The bpf_lwt_xmit_push_encap helper needs to access skb_dst(skb)->dev to calculate the needed headroom: err = skb_cow_head(skb, len + LL_RESERVED_SPACE(skb_dst(skb)->dev)); But skb->_skb_refdst may not be initialized when the skb is set up by bpf_prog_test_run_skb function. Executing bpf_lwt_push_ip_encap function in this scenario will trigger null pointer dereference, causing a kernel crash as Yinhao reported: [ 105.186365] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 105.186382] #PF: supervisor read access in kernel mode [ 105.186388] #PF: error_code(0x0000) - not-present page [ 105.186393] PGD 121d3d067 P4D 121d3d067 PUD 106c83067 PMD 0 [ 105.186404] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 105.186412] CPU: 3 PID: 3250 Comm: poc Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 105.186423] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 105.186427] RIP: 0010:bpf_lwt_push_ip_encap+0x1eb/0x520 [ 105.186443] Code: 0f 84 de 01 00 00 0f b7 4a 04 66 85 c9 0f 85 47 01 00 00 31 c0 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8b 73 58 48 83 e6 fe <48> 8b 36 0f b7 be ec 00 00 00 0f b7 b6 e6 00 00 00 01 fe 83 e6 f0 [ 105.186449] RSP: 0018:ffffbb0e0387bc50 EFLAGS: 00010246 [ 105.186455] RAX: 000000000000004e RBX: ffff94c74e036500 RCX: ffff94c74874da00 [ 105.186460] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff94c74e036500 [ 105.186463] RBP: 0000000000000001 R08: 0000000000000002 R09: 0000000000000000 [ 105.186467] R10: ffffbb0e0387bd50 R11: 0000000000000000 R12: ffffbb0e0387bc98 [ 105.186471] R13: 0000000000000014 R14: 0000000000000000 R15: 0000000000000002 [ 105.186484] FS: 00007f166aa4d680(0000) GS:ffff94c8b7780000(0000) knlGS:0000000000000000 [ 105.186490] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.186494] CR2: 0000000000000000 CR3: 000000015eade001 CR4: 0000000000770ee0 [
Added	Reference	https://git.kernel.org/stable/c/5500913516e071dbe23e5a404c861dd2d82c9589
Added	Reference	https://git.kernel.org/stable/c/599905c3f10bb83e6e6881d5a7f5cea5df07dc23
Added	Reference	https://git.kernel.org/stable/c/5c8d1f91fc4898d79f29d79c1a6f7c2b3ee66fb0
Added	Reference	https://git.kernel.org/stable/c/94f95328b9070909b5b875c647b17a11d3d85567
Added	Reference	https://git.kernel.org/stable/c/972787479ee73006fddb5e59ab5c8e733810ff42
Added	Reference	https://git.kernel.org/stable/c/c7ad31fb948fdd4905263f4324160682c3fa7bc6
Added	Affected	[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/bpf/test_run.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"52f278774e796a553be0c869dcaaee6f259ca795","lessThan":"5c8d1f91fc4898d79f29d79c1a6f7c2b3ee66fb0","versionType":"git","status":"affected"},{"version":"52f278774e796a553be0c869dcaaee6f259ca795","lessThan":"c7ad31fb948fdd4905263f4324160682c3fa7bc6","versionType":"git","status":"affected"},{"version":"52f278774e796a553be0c869dcaaee6f259ca795","lessThan":"599905c3f10bb83e6e6881d5a7f5cea5df07dc23","versionType":"git","status":"affected"},{"version":"52f278774e796a553be0c869dcaaee6f259ca795","lessThan":"5500913516e071dbe23e5a404c861dd2d82c9589","versionType":"git","status":"affected"},{"version":"52f278774e796a553be0c869dcaaee6f259ca795","lessThan":"94f95328b9070909b5b875c647b17a11d3d85567","versionType":"git","status":"affected"},{"version":"52f278774e796a553be0c869dcaaee6f259ca795","lessThan":"972787479ee73006fddb5e59ab5c8e733810ff42","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/bpf/test_run.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.1","status":"affected"},{"version":"0","lessThan":"5.1","versionType":"semver","status":"unaffected"},{"version":"6.1.175","lessThanOrEqual":"6.1.","versionType":"semver","status":"unaffected"},{"version":"6.6.141","lessThanOrEqual":"6.6.","versionType":"semver","status":"unaffected"},{"version":"6.12.91","lessThanOrEqual":"6.12.","versionType":"semver","status":"unaffected"},{"version":"6.18.33","lessThanOrEqual":"6.18.","versionType":"semver","status":"unaffected"},{"version":"7.0.10","lessThanOrEqual":"7.0.","versionType":"semver","status":"unaffected"},{"version":"7.1","lessThanOrEqual":"","versionType":"original_commit_for_fix","status":"unaffected"}]}]

Quick Info

CVE Dictionary Entry:
CVE-2026-53111
NVD Published Date:
06/24/2026
NVD Last Modified:
06/24/2026
Source:
kernel.org

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2026-53111 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Change History

New CVE Received from kernel.org 6/24/2026 1:17:25 PM

Quick Info