| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: Fix flipped sign in tls_err_abort() calls\n\nsk->sk_err appears to expect a positive value, a convention that ktls\ndoesn't always follow and that leads to memory corruption in other code.\nFor instance,\n\n [kworker]\n tls_encrypt_done(..., err=<negative error from crypto request>)\n tls_err_abort(.., err)\n sk->sk_err = err;\n\n [task]\n splice_from_pipe_feed\n ...\n tls_sw_do_sendpage\n if (sk->sk_err) {\n ret = -sk->sk_err; // ret is positive\n\n splice_from_pipe_feed (continued)\n ret = actor(...) // ret is still positive and interpreted as bytes\n // written, resulting in underflow of buf->len and\n // sd->len, leading to huge buf->offset and bogus\n // addresses computed in later calls to actor()\n\nFix all tls_err_abort() callers to pass a negative error code\nconsistently and centralize the error-prone sign flip there, throwing in\na warning to catch future misuse and uninlining the function so it\nreally does only warn once." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/net/tls.h", |
| "net/tls/tls_sw.c" |
| ], |
| "versions": [ |
| { |
| "version": "c46234ebb4d1eee5e09819f49169e51cfc6eb909", |
| "lessThan": "e0cfd5159f314d6b304d030363650b06a2299cbb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c46234ebb4d1eee5e09819f49169e51cfc6eb909", |
| "lessThan": "f3dec7e7ace38224f82cf83f0049159d067c2e19", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c46234ebb4d1eee5e09819f49169e51cfc6eb909", |
| "lessThan": "e41473543f75f7dbc5d605007e6f883f1bd13b9a", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c46234ebb4d1eee5e09819f49169e51cfc6eb909", |
| "lessThan": "da353fac65fede6b8b4cfe207f0d9408e3121105", |
| "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/tls.h", |
| "net/tls/tls_sw.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.17", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.17", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.157", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.77", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.14.16", |
| "lessThanOrEqual": "5.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15", |
| "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": "4.17", |
| "versionEndExcluding": "5.4.157" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.17", |
| "versionEndExcluding": "5.10.77" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.17", |
| "versionEndExcluding": "5.14.16" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.17", |
| "versionEndExcluding": "5.15" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/e0cfd5159f314d6b304d030363650b06a2299cbb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f3dec7e7ace38224f82cf83f0049159d067c2e19" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/e41473543f75f7dbc5d605007e6f883f1bd13b9a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/da353fac65fede6b8b4cfe207f0d9408e3121105" |
| } |
| ], |
| "title": "net/tls: Fix flipped sign in tls_err_abort() calls", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47496", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
