{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53353 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-53353 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53353 and fix it if it is affected.\n\nWhat it is: CVE-2026-53353 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-53353 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-53353/ (Markdown: https://insights.sbomify.com/CVE-2026-53353/index.md)","id":"CVE-2026-53353","markdown":"https://insights.sbomify.com/CVE-2026-53353/index.md","name":"CVE-2026-53353","record":{"aliases":["BELL-CVE-2026-53353","DEBIAN-CVE-2026-53353","GHSA-j8j2-8gr5-pf32","ROOT-OS-DEBIAN-11-CVE-2026-53353","ROOT-OS-DEBIAN-12-CVE-2026-53353","ROOT-OS-UBUNTU-2204-CVE-2026-53353","ROOT-OS-UBUNTU-2404-CVE-2026-53353","UBUNTU-CVE-2026-53353"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel HSR","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel HSR module triggers a kernel warning, potentially leading to system instability or denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhsr: Remove WARN_ONCE() in hsr_addr_is_self().\n\nsyzbot reported the warning [0] in hsr_addr_is_self(),\nwhose assumption is simply wrong.\n\nhsr-\u003eself_node is cleared in hsr_del_self_node(), which\nis called from hsr_dellink().\n\nSince dev-\u003ertnl_link_ops-\u003edellink() is called before\nunregister_netdevice_many(), there is a window when\nuser can find the device but without hsr-\u003eself_node.\n\nLet's remove WARN_ONCE() in hsr_addr_is_self().\n\n[0]:\nHSR: No self node\nWARNING: net/hsr/hsr_framereg.c:39 at hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39, CPU#0: syz.4.16848/17220\nModules linked in:\nCPU: 0 UID: 0 PID: 17220 Comm: syz.4.16848 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)}\nTainted: [L]=SOFTLOCKUP\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026\nRIP: 0010:hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39\nCode: 33 2f 41 0f b7 dd 89 ee 09 de 31 ff e8 c8 b4 c6 f6 09 dd 74 54 e8 0f b0 c6 f6 31 ed eb 53 e8 06 b0 c6 f6 48 8d 3d 2f 50 9c 04 \u003c67\u003e 48 0f b9 3a 31 ed eb 42 e8 c1 13 1f 00 89 c5 31 ff 89 c6 e8 96\nRSP: 0018:ffffc900041c70e0 EFLAGS: 00010283\nRAX: ffffffff8afdc6ca RBX: ffffffff8afdc4e6 RCX: 0000000000080000\nRDX: ffffc90010493000 RSI: 0000000000000948 RDI: ffffffff8f9a1700\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: ffffc900041c71e8 R11: fffff52000838e3f R12: dffffc0000000000\nR13: ffff888041f9e3c0 R14: ffff888086ee3802 R15: 0000000000000000\nFS:  00007f6fe985d6c0(0000) GS:ffff888126176000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f80bd437dac CR3: 0000000025096000 CR4: 00000000003526f0\nDR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002\nDR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n check_local_dest net/hsr/hsr_forward.c:592 [inline]\n fill_frame_info net/hsr/hsr_forward.c:728 [inline]\n hsr_forward_skb+0xa11/0x2a80 net/hsr/hsr_forward.c:739\n hsr_dev_xmit+0x253/0x370 net/hsr/hsr_device.c:236\n __netdev_start_xmit include/linux/netdevice.h:5368 [inline]\n netdev_start_xmit include/linux/netdevice.h:5377 [inline]\n xmit_one net/core/dev.c:3888 [inline]\n dev_hard_start_xmit+0x2df/0x860 net/core/dev.c:3904\n __dev_queue_xmit+0x1428/0x3900 net/core/dev.c:4870\n neigh_output include/net/neighbour.h:556 [inline]\n ip_finish_output2+0xcec/0x10b0 net/ipv4/ip_output.c:237\n ip_send_skb net/ipv4/ip_output.c:1510 [inline]\n ip_push_pending_frames+0x8b/0x110 net/ipv4/ip_output.c:1530\n raw_sendmsg+0x1547/0x1a50 net/ipv4/raw.c:659\n sock_sendmsg_nosec net/socket.c:787 [inline]\n __sock_sendmsg net/socket.c:802 [inline]\n ____sys_sendmsg+0x7da/0x9c0 net/socket.c:2698\n ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752\n __sys_sendmsg net/socket.c:2784 [inline]\n __do_sys_sendmsg net/socket.c:2789 [inline]\n __se_sys_sendmsg net/socket.c:2787 [inline]\n __x64_sys_sendmsg+0x1c3/0x2a0 net/socket.c:2787\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f6feb62ce59\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 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f6fe985d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f6feb8a6090 RCX: 00007f6feb62ce59\nRDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004\nRBP: 00007f6feb6c2d6f R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007f6feb8a6128 R14: 00007f6feb8a6090 R15: 00007ffcf01cc488\n \u003c/TASK\u003e","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"hsr: Remove WARN_ONCE() in hsr_addr_is_self().","id":"CVE-2026-53353","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"arm64: errata: Mitigate TLBI errata on various Arm CPUs","id":"CVE-2026-53354"},"packages":[],"prev":{"headline":"signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()","id":"CVE-2026-53352"},"products":["Linux"],"published":"2026-07-01","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-07-01","vendors":["Linux"]},"summary":"A race condition in the Linux kernel HSR module triggers a kernel warning, potentially leading to system instability or denial of service.","url":"https://insights.sbomify.com/CVE-2026-53353/"}