{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-49916", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49916", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-05-01T14:10:56.851Z", "updatedAt": "2026-05-23T15:23:13.168Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "rose: Fix NULL pointer dereference in rose_send_frame()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nrose: Fix NULL pointer dereference in rose_send_frame()\n\nThe syzkaller reported an issue:\n\nKASAN: null-ptr-deref in range [0x0000000000000380-0x0000000000000387]\nCPU: 0 PID: 4069 Comm: kworker/0:15 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nWorkqueue: rcu_gp srcu_invoke_callbacks\nRIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101\nCall Trace:\n \n rose_transmit_clear_request+0x1d5/0x290 net/rose/rose_link.c:255\n rose_rx_call_request+0x4c0/0x1bc0 net/rose/af_rose.c:1009\n rose_loopback_timer+0x19e/0x590 net/rose/rose_loopback.c:111\n call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474\n expire_timers kernel/time/timer.c:1519 [inline]\n __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790\n __run_timers kernel/time/timer.c:1768 [inline]\n run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803\n __do_softirq+0x1d0/0x9c8 kernel/softirq.c:571\n [...]\n \n\nIt triggers NULL pointer dereference when 'neigh->dev->dev_addr' is\ncalled in the rose_send_frame(). It's the first occurrence of the\n`neigh` is in rose_loopback_timer() as `rose_loopback_neigh', and\nthe 'dev' in 'rose_loopback_neigh' is initialized sa nullptr.\n\nIt had been fixed by commit 3b3fd068c56e3fbea30090859216a368398e39bf\n(\"rose: Fix Null pointer dereference in rose_send_frame()\") ever.\nBut it's introduced by commit 3c53cd65dece47dd1f9d3a809f32e59d1d87b2b8\n(\"rose: check NULL rose_loopback_neigh->loopback\") again.\n\nWe fix it by add NULL check in rose_transmit_clear_request(). When\nthe 'dev' in 'neigh' is NULL, we don't reply the request and just\nclear it.\n\nsyzkaller don't provide repro, and I provide a syz repro like:\nr0 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)\nioctl$sock_inet_SIOCSIFFLAGS(r0, 0x8914, &(0x7f0000000180)={'rose0\\x00', 0x201})\nr1 = syz_init_net_socket$rose(0xb, 0x5, 0x0)\nbind$rose(r1, &(0x7f00000000c0)=@full={0xb, @dev, @null, 0x0, [@null, @null, @netrom, @netrom, @default, @null]}, 0x40)\nconnect$rose(r1, &(0x7f0000000240)=@short={0xb, @dev={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, 0x1, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}}, 0x1c)", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "76885373129b13df35ecc9b4ee86ea5840f12133", "status": "affected", "versionType": "git", "lessThan": "01b9c68c121847d05a4ccef68244dadf82bfa331" }, { "version": "b8f9de195d6303f52bae16c7911f35ac14ba7e3d", "status": "affected", "versionType": "git", "lessThan": "bbc03d74e641e824754443b908454ca9e203773e" }, { "version": "0aae33feb7a56b28318f92c960a3d08d9c305984", "status": "affected", "versionType": "git", "lessThan": "5b46adfbee1e429f33b10a88d6c00fa88f3d6c77" }, { "version": "6e4b20d548fc97ecbdca15c8d96302ee5e3e6313", "status": "affected", "versionType": "git", "lessThan": "b13be5e852b03f376058027e462fad4230240891" }, { "version": "de3deadd11987070788b48825bec4647458b988d", "status": "affected", "versionType": "git", "lessThan": "f06186e5271b980bac03f5c97276ed0146ddc9b0" }, { "version": "9cf85759e104d7e9c3fd8920a554195b715d6797", "status": "affected", "versionType": "git", "lessThan": "3e2129c67daca21043a26575108f6286c85e71f6" }, { "version": "3c53cd65dece47dd1f9d3a809f32e59d1d87b2b8", "status": "affected", "versionType": "git", "lessThan": "a601e5eded33bb88b8a42743db8fef3ad41dd97e" }, { "version": "3c53cd65dece47dd1f9d3a809f32e59d1d87b2b8", "status": "affected", "versionType": "git", "lessThan": "e97c089d7a49f67027395ddf70bf327eeac2611e" }, { "version": "9197ca40fd9de265caedba70d0cb5814c4e45952", "status": "affected", "versionType": "git" }, { "version": "4.9.327", "status": "affected", "versionType": "semver", "lessThan": "4.9.333" }, { "version": "4.14.292", "status": "affected", "versionType": "semver", "lessThan": "4.14.299" }, { "version": "4.19.257", "status": "affected", "versionType": "semver", "lessThan": "4.19.265" }, { "version": "5.4.212", "status": "affected", "versionType": "semver", "lessThan": "5.4.224" }, { "version": "5.10.140", "status": "affected", "versionType": "semver", "lessThan": "5.10.154" }, { "version": "5.15.64", "status": "affected", "versionType": "semver", "lessThan": "5.15.78" }, { "version": "5.19.6", "status": "affected", "versionType": "semver", "lessThan": "5.20" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.0", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.0" }, { "version": "4.9.333", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.9.*" }, { "version": "4.14.299", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.265", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.224", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.154", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.78", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.0.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.0.*" }, { "version": "6.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }