CVE-2026-74257: Software Security Vulnerability Vulnerability

HIGH

Advisory Identifier: GHSA-9q9r-2g23-7q72

CVSS 7.8

Published 2026-08-15

Advisory Summary

CVE-2026-74257 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74257 at a Glance

CVE Identifier CVE-2026-74257

GHSA Identifier GHSA-9q9r-2g23-7q72

Severity HIGH

CVSS v3.1 Base Score 7.8

CWE Classification General Security Weakness

Affected Product Software

Package Ecosystem Maven

Published Date 2026-08-15

Last Updated 2026-08-17

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)

Attack Complexity Low (AC:L)

Privileges Required Low (PR:L)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity High (I:H)

Availability High (A:H)

How to Fix CVE-2026-74257

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-74257, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: sockmap: Fix use-after-free in udp_bpf_recvmsg() syzbot reported use-after-free of struct sk_msg in sk_msg_recvmsg(). [0] sk_msg_recvmsg() peeks sk_msg from psock->ingress_msg under a lock, but its processing is lockless. Thus, sk_msg_recvmsg() must be serialised by callers, otherwise multiple threads could touch the same sk_msg. For example, TCP uses lock_sock(), and AF_UNIX uses unix_sk(sk)->iolock. Initially, udp_bpf_recvmsg() had used lock_sock(), but the cited commit removed it. Let's serialise sk_msg_recvmsg() with lock_sock() in udp_bpf_recvmsg(). Note that holding spin_lock_bh(&sk->sk_receive_queue.lock) is not an option due to copy_page_to_iter() in sk_msg_recvmsg(). [0]: BUG: KASAN: slab-use-after-free in sk_msg_recvmsg+0xb54/0xc30 net/core/skmsg.c:428 Read of size 4 at addr ffff88814cdcf000 by task syz.0.24/6020 CPU: 1 UID: 0 PID: 6020 Comm: syz.0.24 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 Call Trace: <TASK> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xba/0x230 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 sk_msg_recvmsg+0xb54/0xc30 net/core/skmsg.c:428 udp_bpf_recvmsg+0x4bd/0xe00 net/ipv4/udp_bpf.c:84 inet_recvmsg+0x260/0x270 net/ipv4/af_inet.c:891 sock_recvmsg_nosec net/socket.c:1078 [inline] sock_recvmsg+0x1a8/0x270 net/socket.c:1100 ____sys_recvmsg+0x1e6/0x4a0 net/socket.c:2812 ___sys_recvmsg+0x215/0x590 net/socket.c:2854 do_recvmmsg+0x334/0x800 net/socket.c:2949 __sys_recvmmsg net/socket.c:3023 [inline] __do_sys_recvmmsg net/socket.c:3046 [inline] __se_sys_recvmmsg net/socket.c:3039 [inline] __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3039 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb319f9aeb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb31ad97028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fb31a216090 RCX: 00007fb319f9aeb9 RDX: 0000000000000001 RSI: 0000200000000400 RDI: 0000000000000004 RBP: 00007fb31a008c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000040000021 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb31a216128 R14: 00007fb31a216090 R15: 00007ffe21dd0a98 </TASK> Allocated by task 6019: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_noprof+0x3d1/0x6e0 mm/slub.c:5780 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] alloc_sk_msg net/core/skmsg.c:510 [inline] sk_psock_skb_ingress_self+0x60/0x350 net/core/skmsg.c:612 sk_psock_verdict_apply net/core/skmsg.c:1038 [inline] sk_psock_verdict_recv+0x7d9/0x8d0 net/core/skmsg.c:1236 udp_read_skb+0x73e/0x7e0 net/ipv4/udp.c:2045 sk_psock_verdict_data_ready+0x12d/0x550 net/core/skmsg.c:1257 __udp_enqueue_schedule_skb+0xc54/0x10b0 net/ipv4/udp.c:1789 __udp_queue_rcv_skb net/ipv4/udp.c:2346 [inline] udp_queue_rcv_one_skb+0xac5/0x19c0 net/ipv4/udp.c:2475 __udp4_lib_mcast_deliver+0xc06/0xcf0 net/ipv4/udp.c:2585 __udp4_lib_rcv+0x10f6/0x2620 net/ipv4/udp.c:2724 ip_protocol_deliver_rcu+0x282/0x440 net/ipv4/ip_input.c:207 ip_local_deliver_finish+0x3bb/0x6f0 net/ipv4/ip_input.c:241 NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318 dst_input include/net/dst.h:474 [inline] ip_sublist_rcv_finish+0x221/0x2a0 net/ipv4/ip_input.c:584 ip_list_rcv_finish net/ipv4/ip_inp ---truncated---

References

NVD — CVE-2026-74257 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-74257

git.kernel.org/stable/c/39d44ed690... WEB

https://git.kernel.org/stable/c/39d44ed6904bfa9a1c6d0538672dd50c7b85520e

git.kernel.org/stable/c/81567d2b3f... WEB

https://git.kernel.org/stable/c/81567d2b3f4dc4fc32f8b61433738bce2cafd4a1

git.kernel.org/stable/c/c010995b29... WEB

https://git.kernel.org/stable/c/c010995b29c8939c6aa69e3cb26f8dbee163d156

Frequently Asked Questions

What is CVE-2026-74257?

CVE-2026-74257 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.

Which Software versions are affected?

Affected versions include releases prior to current release patches.

What version fixes CVE-2026-74257?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

What is the CVSS score of CVE-2026-74257?

CVE-2026-74257 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

What CWE is associated with CVE-2026-74257?

CVE-2026-74257 is classified under General Security Weakness.

How can I check Maven dependencies for CVE-2026-74257?

Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9q9r-2g23-7q72",
  "modified" : "2026-08-17T06:33:34Z",
  "published" : "2026-08-15T06:32:27Z",
  "aliases" : [ "CVE-2026-74257" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsockmap: Fix use-after-free in udp_bpf_recvmsg()\n\nsyzbot reported use-after-free of struct sk_msg in sk_msg_recvmsg(). [0]\n\nsk_msg_recvmsg() peeks sk_msg from psock->ingress_msg under a lock,\nbut its processing is lockless.\n\nThus, sk_msg_recvmsg() must be serialised by callers, otherwise\nmultiple threads could touch the same sk_msg.\n\nFor example, TCP uses lock_sock(), and AF_UNIX uses unix_sk(sk)->iolock.\n\nInitially, udp_bpf_recvmsg() had used lock_sock(), but the cited\ncommit removed it.\n\nLet's serialise sk_msg_recvmsg() with lock_sock() in udp_bpf_recvmsg().\n\nNote that holding spin_lock_bh(&sk->sk_receive_queue.lock) is not\nan option due to copy_page_to_iter() in sk_msg_recvmsg().\n\n[0]:\nBUG: KASAN: slab-use-after-free in sk_msg_recvmsg+0xb54/0xc30 net/core/skmsg.c:428\nRead of size 4 at addr ffff88814cdcf000 by task syz.0.24/6020\n\nCPU: 1 UID: 0 PID: 6020 Comm: syz.0.24 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026\nCall Trace:\n <TASK>\n dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xba/0x230 mm/kasan/report.c:482\n kasan_report+0x117/0x150 mm/kasan/report.c:595\n sk_msg_recvmsg+0xb54/0xc30 net/core/skmsg.c:428\n udp_bpf_recvmsg+0x4bd/0xe00 net/ipv4/udp_bpf.c:84\n inet_recvmsg+0x260/0x270 net/ipv4/af_inet.c:891\n sock_recvmsg_nosec net/socket.c:1078 [inline]\n sock_recvmsg+0x1a8/0x270 net/socket.c:1100\n ____sys_recvmsg+0x1e6/0x4a0 net/socket.c:2812\n ___sys_recvmsg+0x215/0x590 net/socket.c:2854\n do_recvmmsg+0x334/0x800 net/socket.c:2949\n __sys_recvmmsg net/socket.c:3023 [inline]\n __do_sys_recvmmsg net/socket.c:3046 [inline]\n __se_sys_recvmmsg net/socket.c:3039 [inline]\n __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3039\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fb319f9aeb9\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fb31ad97028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b\nRAX: ffffffffffffffda RBX: 00007fb31a216090 RCX: 00007fb319f9aeb9\nRDX: 0000000000000001 RSI: 0000200000000400 RDI: 0000000000000004\nRBP: 00007fb31a008c1f R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000040000021 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007fb31a216128 R14: 00007fb31a216090 R15: 00007ffe21dd0a98\n </TASK>\n\nAllocated by task 6019:\n kasan_save_stack mm/kasan/common.c:57 [inline]\n kasan_save_track+0x3e/0x80 mm/kasan/common.c:78\n poison_kmalloc_redzone mm/kasan/common.c:398 [inline]\n __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415\n kasan_kmalloc include/linux/kasan.h:263 [inline]\n __kmalloc_cache_noprof+0x3d1/0x6e0 mm/slub.c:5780\n kmalloc_noprof include/linux/slab.h:957 [inline]\n kzalloc_noprof include/linux/slab.h:1094 [inline]\n alloc_sk_msg net/core/skmsg.c:510 [inline]\n sk_psock_skb_ingress_self+0x60/0x350 net/core/skmsg.c:612\n sk_psock_verdict_apply net/core/skmsg.c:1038 [inline]\n sk_psock_verdict_recv+0x7d9/0x8d0 net/core/skmsg.c:1236\n udp_read_skb+0x73e/0x7e0 net/ipv4/udp.c:2045\n sk_psock_verdict_data_ready+0x12d/0x550 net/core/skmsg.c:1257\n __udp_enqueue_schedule_skb+0xc54/0x10b0 net/ipv4/udp.c:1789\n __udp_queue_rcv_skb net/ipv4/udp.c:2346 [inline]\n udp_queue_rcv_one_skb+0xac5/0x19c0 net/ipv4/udp.c:2475\n __udp4_lib_mcast_deliver+0xc06/0xcf0 net/ipv4/udp.c:2585\n __udp4_lib_rcv+0x10f6/0x2620 net/ipv4/udp.c:2724\n ip_protocol_deliver_rcu+0x282/0x440 net/ipv4/ip_input.c:207\n ip_local_deliver_finish+0x3bb/0x6f0 net/ipv4/ip_input.c:241\n NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318\n dst_input include/net/dst.h:474 [inline]\n ip_sublist_rcv_finish+0x221/0x2a0 net/ipv4/ip_input.c:584\n ip_list_rcv_finish net/ipv4/ip_inp\n---truncated---",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74257"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/39d44ed6904bfa9a1c6d0538672dd50c7b85520e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/81567d2b3f4dc4fc32f8b61433738bce2cafd4a1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c010995b29c8939c6aa69e3cb26f8dbee163d156"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T06:22:24Z"
  }
}

CVSS V3

7.8 HIGH