{"id":"CVE-2026-31658","state":"PUBLISHED","title":"net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()\n\nWhen dma_map_single() fails in tse_start_xmit(), the function returns\nNETDEV_TX_OK without freeing the skb. Since NETDEV_TX_OK tells the\nstack the packet was consumed, the skb is never freed, leaking memory\non every DMA mapping failure.\n\nAdd dev_kfree_skb_any() before returning to properly free the skb.","publishedAt":"2026-04-24T14:45:09.566Z","updatedAt":"2026-10-15T01:17:32.555Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"ae2cd46f57f422b51aedd406ff5d75cbff401d5d","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"cb1d318702fdf643061350d164250198df4116f2","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"d5ec406f0543bd6cdfd563b08015fdec8c4d5712","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"2eb9d67704ca8f1101f7435b85f113ede471f9f2","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"60f462cd2716d86bd2174f9d5e035c9278f30480","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"3aca300e88afe56afb000cdc4c65383014fb17f9","versionType":"git"},{"version":"bbd2190ce96d8fce031f0526c1f970b68adc9d1a","status":"affected","lessThan":"6dede3967619b5944003227a5d09fdc21ed57d10","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/altera/altera_tse_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.169","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.135","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.82","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.23","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.13","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/altera/altera_tse_main.c"]}],"references":["https://git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5d","https://git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2","https://git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712","https://git.kernel.org/stable/c/2eb9d67704ca8f1101f7435b85f113ede471f9f2","https://git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7","https://git.kernel.org/stable/c/60f462cd2716d86bd2174f9d5e035c9278f30480","https://git.kernel.org/stable/c/3aca300e88afe56afb000cdc4c65383014fb17f9","https://git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10","https://cert-portal.siemens.com/productcert/html/ssa-082556.html","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31658.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31658","state":"PUBLISHED","datePublished":"2026-04-24T14:45:09.566Z","dateUpdated":"2026-10-15T01:17:32.555Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.129Z"},"containers":{"cna":{"title":"net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()\n\nWhen dma_map_single() fails in tse_start_xmit(), the function returns\nNETDEV_TX_OK without freeing the skb. 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