{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"MEDIUM" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:ipv6: sr: fix out-of-bounds read when setting HMAC data.The SRv6 layer allows defining HMAC data that can later be used to sign IPv6Segment Routing Headers. This configuration is realised via netlink throughfour attributes: SEG6_ATTR_HMACKEYID, SEG6_ATTR_SECRET, SEG6_ATTR_SECRETLEN andSEG6_ATTR_ALGID. Because the SECRETLEN attribute is decoupled from the actuallength of the SECRET attribute, it is possible to provide invalid combinations(e.g., secret = , secretlen = 64). This case is not checked in the code andwith an appropriately crafted netlink message, an out-of-bounds read of upto 64 bytes (max secret length) can occur past the skb end pointer and intoskb_shared_info:Breakpoint 1, seg6_genl_sethmac (skb=, info=) at net/ipv6/seg6.c:208208 memcpy(hinfo->secret, secret, slen);(gdb) bt #0 seg6_genl_sethmac (skb=, info=) at net/ipv6/seg6.c:208 #1 0xffffffff81e012e9 in genl_family_rcv_msg_doit (skb=skb@entry=0xffff88800b1f9f00, nlh=nlh@entry=0xffff88800b1b7600, extack=extack@entry=0xffffc90000ba7af0, ops=ops@entry=0xffffc90000ba7a80, hdrlen=4, net=0xffffffff84237580 , family=, family=) at net/netlink/genetlink.c:731 #2 0xffffffff81e01435 in genl_family_rcv_msg (extack=0xffffc90000ba7af0, nlh=0xffff88800b1b7600, skb=0xffff88800b1f9f00, family=0xffffffff82fef6c0 ) at net/netlink/genetlink.c:775 #3 genl_rcv_msg (skb=0xffff88800b1f9f00, nlh=0xffff88800b1b7600, extack=0xffffc90000ba7af0) at net/netlink/genetlink.c:792 #4 0xffffffff81dfffc3 in netlink_rcv_skb (skb=skb@entry=0xffff88800b1f9f00, cb=cb@entry=0xffffffff81e01350 ) at net/netlink/af_netlink.c:2501 #5 0xffffffff81e00919 in genl_rcv (skb=0xffff88800b1f9f00) at net/netlink/genetlink.c:803 #6 0xffffffff81dff6ae in netlink_unicast_kernel (ssk=0xffff888010eec800, skb=0xffff88800b1f9f00, sk=0xffff888004aed000) at net/netlink/af_netlink.c:1319 #7 netlink_unicast (ssk=ssk@entry=0xffff888010eec800, skb=skb@entry=0xffff88800b1f9f00, portid=portid@entry=0, nonblock=) at net/netlink/af_netlink.c:1345 #8 0xffffffff81dff9a4 in netlink_sendmsg (sock=, msg=0xffffc90000ba7e48, len=) at net/netlink/af_netlink.c:1921...(gdb) p/x ((struct sk_buff *)0xffff88800b1f9f00)->head + ((struct sk_buff *)0xffff88800b1f9f00)->end$1 = 0xffff88800b1b76c0(gdb) p/x secret$2 = 0xffff88800b1b76c0(gdb) p slen$3 = 64 @ The OOB data can then be read back from userspace by dumping HMAC state. Thiscommit fixes this by ensuring SECRETLEN cannot exceed the actual length ofSECRET.", "category":"general", "title":"Synopsis" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48687" }, { "summary":"CVE-2022-48687 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2022/csaf-openeuler-cve-2022-48687.json" }, { "summary":"openEuler-SA-2024-2080", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2080" }, { "summary":"CVE-2022-48687", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2022-48687&packageName=kernel" } ], "title":"openEuler cve CVE-2022-48687", "tracking":{ "initial_release_date":"2024-08-30T20:25:43+08:00", "revision_history":[ { "date":"2024-08-30T20:25:43+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2024-08-30T20:25:43+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2024-08-30T20:25:43+08:00", "id":"CVE-2022-48687", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:22.03-LTS-SP1" }, "product_id":"openEuler-22.03-LTS-SP1", "name":"openEuler-22.03-LTS-SP1" }, "name":"openEuler-22.03-LTS-SP1", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:22.03-LTS-SP1" }, "product_id":"kernel-5.10.0-136.91.0.172.oe2203sp1.aarch64.rpm", 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This configuration is realised via netlink throughfour attributes: SEG6_ATTR_HMACKEYID, SEG6_ATTR_SECRET, SEG6_ATTR_SECRETLEN andSEG6_ATTR_ALGID. Because the SECRETLEN attribute is decoupled from the actuallength of the SECRET attribute, it is possible to provide invalid combinations(e.g., secret = , secretlen = 64). This case is not checked in the code andwith an appropriately crafted netlink message, an out-of-bounds read of upto 64 bytes (max secret length) can occur past the skb end pointer and intoskb_shared_info:Breakpoint 1, seg6_genl_sethmac (skb=, info=) at net/ipv6/seg6.c:208208 memcpy(hinfo->secret, secret, slen);(gdb) bt #0 seg6_genl_sethmac (skb=, info=) at net/ipv6/seg6.c:208 #1 0xffffffff81e012e9 in genl_family_rcv_msg_doit (skb=skb@entry=0xffff88800b1f9f00, nlh=nlh@entry=0xffff88800b1b7600, extack=extack@entry=0xffffc90000ba7af0, ops=ops@entry=0xffffc90000ba7a80, hdrlen=4, net=0xffffffff84237580 , family=, family=) at net/netlink/genetlink.c:731 #2 0xffffffff81e01435 in genl_family_rcv_msg (extack=0xffffc90000ba7af0, nlh=0xffff88800b1b7600, skb=0xffff88800b1f9f00, family=0xffffffff82fef6c0 ) at net/netlink/genetlink.c:775 #3 genl_rcv_msg (skb=0xffff88800b1f9f00, nlh=0xffff88800b1b7600, extack=0xffffc90000ba7af0) at net/netlink/genetlink.c:792 #4 0xffffffff81dfffc3 in netlink_rcv_skb (skb=skb@entry=0xffff88800b1f9f00, cb=cb@entry=0xffffffff81e01350 ) at net/netlink/af_netlink.c:2501 #5 0xffffffff81e00919 in genl_rcv (skb=0xffff88800b1f9f00) at net/netlink/genetlink.c:803 #6 0xffffffff81dff6ae in netlink_unicast_kernel (ssk=0xffff888010eec800, skb=0xffff88800b1f9f00, sk=0xffff888004aed000) at net/netlink/af_netlink.c:1319 #7 netlink_unicast (ssk=ssk@entry=0xffff888010eec800, skb=skb@entry=0xffff88800b1f9f00, portid=portid@entry=0, nonblock=) at net/netlink/af_netlink.c:1345 #8 0xffffffff81dff9a4 in netlink_sendmsg (sock=, msg=0xffffc90000ba7e48, len=) at net/netlink/af_netlink.c:1921...(gdb) p/x ((struct sk_buff *)0xffff88800b1f9f00)->head + ((struct sk_buff *)0xffff88800b1f9f00)->end$1 = 0xffff88800b1b76c0(gdb) p/x secret$2 = 0xffff88800b1b76c0(gdb) p slen$3 = 64 @ The OOB data can then be read back from userspace by dumping HMAC state. Thiscommit fixes this by ensuring SECRETLEN cannot exceed the actual length ofSECRET.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-22.03-LTS-SP1:kernel-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-debuginfo-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-debugsource-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-devel-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-headers-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-source-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-tools-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-tools-debuginfo-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:kernel-tools-devel-5.10.0-136.91.0.172.oe2203sp1.aarch64", "openEuler-22.03-LTS-SP1:perf-5.10.0-136.91.0.172.oe2203sp1.aarch64", 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"openEuler-22.03-LTS-SP1:perf-debuginfo-5.10.0-136.91.0.172.oe2203sp1.x86_64", "openEuler-22.03-LTS-SP1:python3-perf-5.10.0-136.91.0.172.oe2203sp1.x86_64", "openEuler-22.03-LTS-SP1:python3-perf-debuginfo-5.10.0-136.91.0.172.oe2203sp1.x86_64" ] } ], "threats":[ { "details":"Medium", "category":"impact" } ], "title":"CVE-2022-48687" } ] }