{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-48809","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-16T11:38:08.897Z","datePublished":"2024-07-16T11:43:59.757Z","dateUpdated":"2025-05-04T08:23:32.834Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:23:32.834Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix a memleak when uncloning an skb dst and its metadata\n\nWhen uncloning an skb dst and its associated metadata, a new\ndst+metadata is allocated and later replaces the old one in the skb.\nThis is helpful to have a non-shared dst+metadata attached to a specific\nskb.\n\nThe issue is the uncloned dst+metadata is initialized with a refcount of\n1, which is increased to 2 before attaching it to the skb. When\ntun_dst_unclone returns, the dst+metadata is only referenced from a\nsingle place (the skb) while its refcount is 2. Its refcount will never\ndrop to 0 (when the skb is consumed), leading to a memory leak.\n\nFix this by removing the call to dst_hold in tun_dst_unclone, as the\ndst+metadata refcount is already 1."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/net/dst_metadata.h"],"versions":[{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"4ac84498fbe84a00e7aef185e2bb3e40ce71eca4","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"c1ff27d100e2670b03cbfddb9117e5f9fc672540","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"0be943916d781df2b652793bb2d3ae4f9624c10a","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"fdcb263fa5cda15b8cb24a641fa2718c47605314","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"8b1087b998e273f07be13dcb5f3ca4c309c7f108","status":"affected","versionType":"git"},{"version":"fc4099f17240767554ff3a73977acb78ef615404","lessThan":"9eeabdf17fa0ab75381045c867c370f4cc75a613","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/net/dst_metadata.h"],"versions":[{"version":"4.3","status":"affected"},{"version":"0","lessThan":"4.3","status":"unaffected","versionType":"semver"},{"version":"4.9.302","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.267","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.230","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.180","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.101","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.24","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.10","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.9.302"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.14.267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.19.230"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.4.180"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.10.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.15.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.16.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4ac84498fbe84a00e7aef185e2bb3e40ce71eca4"},{"url":"https://git.kernel.org/stable/c/c1ff27d100e2670b03cbfddb9117e5f9fc672540"},{"url":"https://git.kernel.org/stable/c/0be943916d781df2b652793bb2d3ae4f9624c10a"},{"url":"https://git.kernel.org/stable/c/a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88"},{"url":"https://git.kernel.org/stable/c/00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1"},{"url":"https://git.kernel.org/stable/c/fdcb263fa5cda15b8cb24a641fa2718c47605314"},{"url":"https://git.kernel.org/stable/c/8b1087b998e273f07be13dcb5f3ca4c309c7f108"},{"url":"https://git.kernel.org/stable/c/9eeabdf17fa0ab75381045c867c370f4cc75a613"}],"title":"net: fix a memleak when uncloning an skb dst and its metadata","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:25:01.534Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/4ac84498fbe84a00e7aef185e2bb3e40ce71eca4","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c1ff27d100e2670b03cbfddb9117e5f9fc672540","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/0be943916d781df2b652793bb2d3ae4f9624c10a","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/fdcb263fa5cda15b8cb24a641fa2718c47605314","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8b1087b998e273f07be13dcb5f3ca4c309c7f108","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9eeabdf17fa0ab75381045c867c370f4cc75a613","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48809","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T16:58:37.940393Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:34:13.409Z"}}]}}