{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31623","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.124Z","datePublished":"2026-04-24T14:42:40.566Z","dateUpdated":"2026-05-11T22:12:23.408Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:12:23.408Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()\n\nA malicious USB device claiming to be a CDC Phonet modem can overflow\nthe skb_shared_info->frags[] array by sending an unbounded sequence of\nfull-page bulk transfers.\n\nDrop the skb and increment the length error when the frag limit is\nreached.  This matches the same fix that commit f0813bcd2d9d (\"net:\nwwan: t7xx: fix potential skb->frags overflow in RX path\") did for the\nt7xx driver."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/cdc-phonet.c"],"versions":[{"version":"87cf65601e1709e57f7e28f0f7b3eb0a992c1782","lessThan":"d4e1946bea8d6441835eb3fd09b19237ba366a6f","status":"affected","versionType":"git"},{"version":"87cf65601e1709e57f7e28f0f7b3eb0a992c1782","lessThan":"a23b1b1aaf41e174181d5853a70e65d4d01e648c","status":"affected","versionType":"git"},{"version":"87cf65601e1709e57f7e28f0f7b3eb0a992c1782","lessThan":"c183d5775129a0a7495bd61a6e57ec230dcf01e5","status":"affected","versionType":"git"},{"version":"87cf65601e1709e57f7e28f0f7b3eb0a992c1782","lessThan":"ebf75c6301c4972a87542ebf2d994c6391eb5d46","status":"affected","versionType":"git"},{"version":"87cf65601e1709e57f7e28f0f7b3eb0a992c1782","lessThan":"9989938d13cc5ba8447eeed5a61acfcf61bc6801","status":"affected","versionType":"git"},{"version":"87cf65601e1709e57f7e28f0f7b3eb0a992c1782","lessThan":"600dc40554dc5ad1e6f3af51f700228033f43ea7","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/cdc-phonet.c"],"versions":[{"version":"2.6.31","status":"affected"},{"version":"0","lessThan":"2.6.31","status":"unaffected","versionType":"semver"},{"version":"6.6.136","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.83","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.24","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.14","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0.1","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1-rc1","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":"2.6.31","versionEndExcluding":"6.6.136"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.12.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.18.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.19.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.0.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.1-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d4e1946bea8d6441835eb3fd09b19237ba366a6f"},{"url":"https://git.kernel.org/stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648c"},{"url":"https://git.kernel.org/stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5"},{"url":"https://git.kernel.org/stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46"},{"url":"https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801"},{"url":"https://git.kernel.org/stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7"}],"title":"net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()","x_generator":{"engine":"bippy-1.2.0"}}}}