{ "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-2022-48687", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48687", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2024-05-03T14:59:32.099Z", "updatedAt": "2026-05-11T18:45:00.928Z", "importedAt": "2026-10-24T01:56:45.230Z", "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": "ipv6: sr: fix out-of-bounds read when setting HMAC data.", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: sr: fix out-of-bounds read when setting HMAC data.\n\nThe SRv6 layer allows defining HMAC data that can later be used to sign IPv6\nSegment Routing Headers. This configuration is realised via netlink through\nfour attributes: SEG6_ATTR_HMACKEYID, SEG6_ATTR_SECRET, SEG6_ATTR_SECRETLEN and\nSEG6_ATTR_ALGID. Because the SECRETLEN attribute is decoupled from the actual\nlength of the SECRET attribute, it is possible to provide invalid combinations\n(e.g., secret = \"\", secretlen = 64). This case is not checked in the code and\nwith an appropriately crafted netlink message, an out-of-bounds read of up\nto 64 bytes (max secret length) can occur past the skb end pointer and into\nskb_shared_info:\n\nBreakpoint 1, seg6_genl_sethmac (skb=, info=) at net/ipv6/seg6.c:208\n208\t\tmemcpy(hinfo->secret, secret, slen);\n(gdb) bt\n #0 seg6_genl_sethmac (skb=, info=) at net/ipv6/seg6.c:208\n #1 0xffffffff81e012e9 in genl_family_rcv_msg_doit (skb=skb@entry=0xffff88800b1f9f00, nlh=nlh@entry=0xffff88800b1b7600,\n extack=extack@entry=0xffffc90000ba7af0, ops=ops@entry=0xffffc90000ba7a80, hdrlen=4, net=0xffffffff84237580 , family=,\n family=) at net/netlink/genetlink.c:731\n #2 0xffffffff81e01435 in genl_family_rcv_msg (extack=0xffffc90000ba7af0, nlh=0xffff88800b1b7600, skb=0xffff88800b1f9f00,\n family=0xffffffff82fef6c0 ) at net/netlink/genetlink.c:775\n #3 genl_rcv_msg (skb=0xffff88800b1f9f00, nlh=0xffff88800b1b7600, extack=0xffffc90000ba7af0) at net/netlink/genetlink.c:792\n #4 0xffffffff81dfffc3 in netlink_rcv_skb (skb=skb@entry=0xffff88800b1f9f00, cb=cb@entry=0xffffffff81e01350 )\n at net/netlink/af_netlink.c:2501\n #5 0xffffffff81e00919 in genl_rcv (skb=0xffff88800b1f9f00) at net/netlink/genetlink.c:803\n #6 0xffffffff81dff6ae in netlink_unicast_kernel (ssk=0xffff888010eec800, skb=0xffff88800b1f9f00, sk=0xffff888004aed000)\n at net/netlink/af_netlink.c:1319\n #7 netlink_unicast (ssk=ssk@entry=0xffff888010eec800, skb=skb@entry=0xffff88800b1f9f00, portid=portid@entry=0, nonblock=)\n at net/netlink/af_netlink.c:1345\n #8 0xffffffff81dff9a4 in netlink_sendmsg (sock=, msg=0xffffc90000ba7e48, len=) at net/netlink/af_netlink.c:1921\n...\n(gdb) p/x ((struct sk_buff *)0xffff88800b1f9f00)->head + ((struct sk_buff *)0xffff88800b1f9f00)->end\n$1 = 0xffff88800b1b76c0\n(gdb) p/x secret\n$2 = 0xffff88800b1b76c0\n(gdb) p slen\n$3 = 64 '@'\n\nThe OOB data can then be read back from userspace by dumping HMAC state. This\ncommit fixes this by ensuring SECRETLEN cannot exceed the actual length of\nSECRET.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "dc9dbd65c803af1607484fed5da50d41dc8dd864" }, { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "f684c16971ed5e77dfa25a9ad25b5297e1f58eab" }, { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "3df71e11a4773d775c3633c44319f7acdb89011c" }, { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "076f2479fc5a15c4a970ca3b5e57d42ba09a31fa" }, { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "55195563ec29f80f984237b743de0e2b6ba4d093" }, { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "56ad3f475482bca55b0ae544031333018eb145b3" }, { "version": "4f4853dc1c9c1994f6f756eabdcc25374ff271d9", "status": "affected", "versionType": "git", "lessThan": "84a53580c5d2138c7361c7c3eea5b31827e63b35" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.10" }, { "version": "4.14.293", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.258", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.213", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.143", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.68", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.19.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.19.*" }, { "version": "6.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }