{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-12T02:36:56.990","vulnerabilities":[{"cve":{"id":"CVE-2021-47353","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-21T15:15:21.693","lastModified":"2024-12-24T16:11:59.943","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nudf: Fix NULL pointer dereference in udf_symlink function\n\nIn function udf_symlink, epos.bh is assigned with the value returned\nby udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c\nand returns the value of sb_getblk function that could be NULL.\nThen, epos.bh is used without any check, causing a possible\nNULL pointer dereference when sb_getblk fails.\n\nThis fix adds a check to validate the value of epos.bh."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: udf: Se corrigió la desreferencia del puntero NULL en la función udf_symlink. En la función udf_symlink, a epos.bh se le asigna el valor devuelto por udf_tgetblk. La función udf_tgetblk está definida en udf/misc.c y devuelve el valor de la función sb_getblk que podría ser NULL. Luego, epos.bh se usa sin ninguna verificación, lo que provoca una posible desreferencia del puntero NULL cuando falla sb_getblk. Esta solución agrega una verificación para validar el valor de epos.bh."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.4.276","matchCriteriaId":"10282F37-B17F-4974-967E-FCD5ABC9AB8E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"4.9.276","matchCriteriaId":"C79FFC06-9530-4CD7-B651-01D786CC925E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.240","matchCriteriaId":"FB359B2E-773D-4D52-9915-E07A47ABE72B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.198","matchCriteriaId":"B93AEDB9-C52B-4222-8F9A-882DAD9EF5B2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.133","matchCriteriaId":"65A8F1FF-5639-455A-8BF4-9FF529240505"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.51","matchCriteriaId":"93289127-DFB3-4515-89DD-50521FF8B7FF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.12.18","matchCriteriaId":"79D13C82-E06F-4A70-A3D1-C09494FBC94D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.13.3","matchCriteriaId":"853187F6-707A-487B-95C0-621B5211B43C"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}